diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-001.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-001.md
index 20f57329bd7..6be1dd23158 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-001.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-001.md
@@ -98,8 +98,10 @@ assert(health === 100);
 
 ```html
 <script>
+--fcc-editable-region--
 var xp = 0;
 
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-002.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-002.md
index 6a08b7cb911..75ac09b51e9 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-002.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-002.md
@@ -96,9 +96,11 @@ assert(gold === 50);
 
 ```html
 <script>
+--fcc-editable-region--
 var xp = 0;
 var health = 100;
 
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-003.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-003.md
index 5c2f4243f4e..f88aea84c2a 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-003.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-003.md
@@ -98,10 +98,12 @@ assert(currentWeapon === 0);
 
 ```html
 <script>
+--fcc-editable-region--
 var xp = 0;
 var health = 100;
 var gold = 50;
 
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-004.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-004.md
index f3901154d85..28c42d302b1 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-004.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-004.md
@@ -103,11 +103,13 @@ assert(
 
 ```html
 <script>
+--fcc-editable-region--
 var xp = 0;
 var health = 100;
 var gold = 50;
 var currentWeapon = 0;
 
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-005.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-005.md
index 1c06e17af7a..281191fe171 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-005.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-005.md
@@ -98,11 +98,13 @@ assert(/let\s+fighting\s*;?/.test(code) && fighting === undefined);
 
 ```html
 <script>
+--fcc-editable-region--
 let xp = 0;
 let health = 100;
 let gold = 50;
 let currentWeapon = 0;
 
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-006.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-006.md
index d0cae1d5d56..499955e1bcb 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-006.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-006.md
@@ -96,12 +96,14 @@ assert(monsterHealth === undefined && inventory === undefined);
 
 ```html
 <script>
+--fcc-editable-region--
 let xp = 0;
 let health = 100;
 let gold = 50;
 let currentWeapon = 0;
 let fighting;
 
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-007.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-007.md
index 2755938a64e..3cc1b7680c1 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-007.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-007.md
@@ -98,6 +98,7 @@ assert(inventory === 'stick');
 
 ```html
 <script>
+--fcc-editable-region--
 let xp = 0;
 let health = 100;
 let gold = 50;
@@ -106,6 +107,7 @@ let fighting;
 let monsterHealth;
 let inventory;
 
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-008.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-008.md
index 9e6f0da43d9..8cebab2a5ce 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-008.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-008.md
@@ -106,6 +106,7 @@ assert(
 
 ```html
 <script>
+--fcc-editable-region--
 let xp = 0;
 let health = 100;
 let gold = 50;
@@ -114,6 +115,7 @@ let fighting;
 let monsterHealth;
 let inventory = "stick";
 
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-009.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-009.md
index 5f6b1961a8d..eaf108fc910 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-009.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-009.md
@@ -96,6 +96,7 @@ assert(inventory[0] === 'stick' && inventory.length === 1);
 
 ```html
 <script>
+--fcc-editable-region--
 let xp = 0;
 let health = 100;
 let gold = 50;
@@ -104,6 +105,7 @@ let fighting;
 let monsterHealth;
 let inventory = ["stick", "dagger", "sword"];
 
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-010.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-010.md
index 2205248dd12..f6fd4a95b23 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-010.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-010.md
@@ -102,6 +102,7 @@ assert(
 
 ```html
 <script>
+--fcc-editable-region--
 let xp = 0;
 let health = 100;
 let gold = 50;
@@ -111,6 +112,7 @@ let monsterHealth;
 let inventory = ["stick"];
 
   
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-011.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-011.md
index da60e97ab6b..38bfbfabdd9 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-011.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-011.md
@@ -103,9 +103,11 @@ let currentWeapon = 0;
 let fighting;
 let monsterHealth;
 let inventory = ["stick"];
+--fcc-editable-region--
 
 let button1 = document.querySelector('#button1');
   
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-012.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-012.md
index 3790aaededc..f65944fd347 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-012.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-012.md
@@ -133,9 +133,11 @@ let currentWeapon = 0;
 let fighting;
 let monsterHealth;
 let inventory = ["stick"];
+--fcc-editable-region--
 
 const button1 = document.querySelector('#button1');
   
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-013.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-013.md
index da87727a50a..601c5b9a345 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-013.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-013.md
@@ -116,7 +116,9 @@ const goldText = document.querySelector("#goldText");
 const monsterStats = document.querySelector("#monsterStats");
 const monsterNameText = document.querySelector("#monsterName");
 const monsterHealthText = document.querySelector("#monsterHealth");
+--fcc-editable-region--
   
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-014.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-014.md
index 5edd4a0c770..d776eac395b 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-014.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-014.md
@@ -114,10 +114,12 @@ const goldText = document.querySelector("#goldText");
 const monsterStats = document.querySelector("#monsterStats");
 const monsterNameText = document.querySelector("#monsterName");
 const monsterHealthText = document.querySelector("#monsterHealth");
+--fcc-editable-region--
 
 // initialize buttons
 
 
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-015.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-015.md
index 9152b08f2f5..e564d868f9a 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-015.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-015.md
@@ -117,10 +117,12 @@ const goldText = document.querySelector("#goldText");
 const monsterStats = document.querySelector("#monsterStats");
 const monsterNameText = document.querySelector("#monsterName");
 const monsterHealthText = document.querySelector("#monsterHealth");
+--fcc-editable-region--
 
 // initialize buttons
 button1.onclick = goStore;
 
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-016.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-016.md
index 6a4a87be2b4..0be2016e9bb 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-016.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-016.md
@@ -124,7 +124,9 @@ const monsterHealthText = document.querySelector("#monsterHealth");
 button1.onclick = goStore;
 button2.onclick = goCave;
 button3.onclick = fightDragon;
+--fcc-editable-region--
 
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-017.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-017.md
index 8d81b9587a8..e7978de9a2f 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-017.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-017.md
@@ -130,8 +130,10 @@ button1.onclick = goStore;
 button2.onclick = goCave;
 button3.onclick = fightDragon;
 
+--fcc-editable-region--
 function goStore() {
 }
+--fcc-editable-region--
 
 </script>
 ```
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-018.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-018.md
index 1d586b16263..2c9c506d5b4 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-018.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-018.md
@@ -127,7 +127,9 @@ button3.onclick = fightDragon;
 function goStore() {
   console.log("Going to store.")
 }
+--fcc-editable-region--
 
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-019.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-019.md
index e9c62601a9f..31ff67eb87e 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-019.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-019.md
@@ -133,7 +133,9 @@ function goStore() {
 function goCave() {
   console.log("Going to cave.");
 }
+--fcc-editable-region--
 
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-020.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-020.md
index 70b3cbca4f6..750b6d8696f 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-020.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-020.md
@@ -127,9 +127,11 @@ button1.onclick = goStore;
 button2.onclick = goCave;
 button3.onclick = fightDragon;
 
+--fcc-editable-region--
 function goStore() {
   console.log("Going to store.");
 }
+--fcc-editable-region--
 
 function goCave() {
   console.log("Going to cave.");
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-021.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-021.md
index 2feb48f4b4f..2b0da28c547 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-021.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-021.md
@@ -129,9 +129,11 @@ button1.onclick = goStore;
 button2.onclick = goCave;
 button3.onclick = fightDragon;
 
+--fcc-editable-region--
 function goStore() {
   button1.innerText = "Buy 10 health (10 gold)";
 }
+--fcc-editable-region--
 
 function goCave() {
   console.log("Going to cave.");
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-022.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-022.md
index c2224e8d863..5d31cc8a007 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-022.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-022.md
@@ -124,11 +124,13 @@ button1.onclick = goStore;
 button2.onclick = goCave;
 button3.onclick = fightDragon;
 
+--fcc-editable-region--
 function goStore() {
   button1.innerText = "Buy 10 health (10 gold)";
   button2.innerText = "Buy weapon (30 gold)";
   button3.innerText = "Go to town square";
 }
+--fcc-editable-region--
 
 function goCave() {
   console.log("Going to cave.");
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-023.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-023.md
index 0cc6d8545ed..6d979e6d788 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-023.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-023.md
@@ -124,6 +124,7 @@ button1.onclick = goStore;
 button2.onclick = goCave;
 button3.onclick = fightDragon;
 
+--fcc-editable-region--
 function goStore() {
   button1.innerText = "Buy 10 health (10 gold)";
   button2.innerText = "Buy weapon (30 gold)";
@@ -132,6 +133,7 @@ function goStore() {
   button2.onclick = buyWeapon;
   button3.onclick = goTown;
 }
+--fcc-editable-region--
 
 function goCave() {
   console.log("Going to cave.");
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-024.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-024.md
index bd6615d8418..c571f35908b 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-024.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-024.md
@@ -141,7 +141,9 @@ function goCave() {
 function fightDragon() {
   console.log("Fighting dragon.");
 }
+--fcc-editable-region--
 
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-025.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-025.md
index 6596565b2bb..1f94768880f 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-025.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-025.md
@@ -133,6 +133,7 @@ button1.onclick = goStore;
 button2.onclick = goCave;
 button3.onclick = fightDragon;
 
+--fcc-editable-region--
 function goStore() {
   button1.innerText = "Buy 10 health (10 gold)";
   button2.innerText = "Buy weapon (30 gold)";
@@ -159,6 +160,7 @@ function buyWeapon() {
 
 function goTown() {
 }
+--fcc-editable-region--
 
 </script>
 ```
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-026.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-026.md
index 4af137caa19..6dafc5faf6b 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-026.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-026.md
@@ -128,6 +128,7 @@ button1.onclick = goStore;
 button2.onclick = goCave;
 button3.onclick = fightDragon;
 
+--fcc-editable-region--
 function goTown() {
   button1.innerText = "Go to store";
   button2.innerText = "Go to cave";
@@ -137,6 +138,7 @@ function goTown() {
   button3.onclick = fightDragon;
   text.innerText = "You are in the town square. You see a sign that says Store.";
 }
+--fcc-editable-region--
 
 function goStore() {
   button1.innerText = "Buy 10 health (10 gold)";
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-027.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-027.md
index 6c779d37230..4ac7f1ffeac 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-027.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-027.md
@@ -129,7 +129,9 @@ const monsterHealthText = document.querySelector("#monsterHealth");
 button1.onclick = goStore;
 button2.onclick = goCave;
 button3.onclick = fightDragon;
+--fcc-editable-region--
 
+--fcc-editable-region--
 function goTown() {
   button1.innerText = "Go to store";
   button2.innerText = "Go to cave";
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-028.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-028.md
index 4e208f98535..88807470d40 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-028.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-028.md
@@ -114,6 +114,9 @@ const goldText = document.querySelector("#goldText");
 const monsterStats = document.querySelector("#monsterStats");
 const monsterNameText = document.querySelector("#monsterName");
 const monsterHealthText = document.querySelector("#monsterHealth");
+--fcc-editable-region--
+
+--fcc-editable-region--
 
 // initialize buttons
 button1.onclick = goStore;
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-029.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-029.md
index e501b60f84c..4819c3823ac 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-029.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-029.md
@@ -119,7 +119,9 @@ const monsterStats = document.querySelector("#monsterStats");
 const monsterNameText = document.querySelector("#monsterName");
 const monsterHealthText = document.querySelector("#monsterHealth");
 
+--fcc-editable-region--
 const locations = [];
+--fcc-editable-region--
 
 // initialize buttons
 button1.onclick = goStore;
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-030.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-030.md
index 8cd3d63cedd..6b2b2db1251 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-030.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-030.md
@@ -125,7 +125,9 @@ const monsterStats = document.querySelector("#monsterStats");
 const monsterNameText = document.querySelector("#monsterName");
 const monsterHealthText = document.querySelector("#monsterHealth");
 
+--fcc-editable-region--
 const locations = [{}];
+--fcc-editable-region--
 
 // initialize buttons
 button1.onclick = goStore;
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-031.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-031.md
index 37b8fed5e52..b57ff8e4d8e 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-031.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-031.md
@@ -126,11 +126,13 @@ const monsterStats = document.querySelector("#monsterStats");
 const monsterNameText = document.querySelector("#monsterName");
 const monsterHealthText = document.querySelector("#monsterHealth");
 
+--fcc-editable-region--
 const locations = [
   {
     name: "town square"
   }
 ];
+--fcc-editable-region--
 
 // initialize buttons
 button1.onclick = goStore;
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-032.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-032.md
index 37eb25af4a0..e734a0f740d 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-032.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-032.md
@@ -121,12 +121,14 @@ const monsterStats = document.querySelector("#monsterStats");
 const monsterNameText = document.querySelector("#monsterName");
 const monsterHealthText = document.querySelector("#monsterHealth");
 
+--fcc-editable-region--
 const locations = [
   {
     name: "town square",
     "button text": []
   }
 ];
+--fcc-editable-region--
 
 // initialize buttons
 button1.onclick = goStore;
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-033.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-033.md
index 11c527fbb78..c0e523031e1 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-033.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-033.md
@@ -119,12 +119,14 @@ const monsterStats = document.querySelector("#monsterStats");
 const monsterNameText = document.querySelector("#monsterName");
 const monsterHealthText = document.querySelector("#monsterHealth");
 
+--fcc-editable-region--
 const locations = [
   {
     name: "town square",
     "button text": ["Go to store", "Go to cave", "Fight dragon"]
   }
 ];
+--fcc-editable-region--
 
 // initialize buttons
 button1.onclick = goStore;
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-034.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-034.md
index 9ffcf992e00..b8a3c592579 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-034.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-034.md
@@ -118,6 +118,7 @@ const monsterStats = document.querySelector("#monsterStats");
 const monsterNameText = document.querySelector("#monsterName");
 const monsterHealthText = document.querySelector("#monsterHealth");
 
+--fcc-editable-region--
 const locations = [
   {
     name: "town square",
@@ -125,6 +126,7 @@ const locations = [
     "button functions": [goStore, goCave, fightDragon]
   }
 ];
+--fcc-editable-region--
 
 // initialize buttons
 button1.onclick = goStore;
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-035.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-035.md
index 8fde46b3d64..4e847fc03af 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-035.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-035.md
@@ -124,6 +124,7 @@ const monsterStats = document.querySelector("#monsterStats");
 const monsterNameText = document.querySelector("#monsterName");
 const monsterHealthText = document.querySelector("#monsterHealth");
 
+--fcc-editable-region--
 const locations = [
   {
     name: "town square",
@@ -132,6 +133,7 @@ const locations = [
     text: "You are in the town square. You see a sign that says \"Store.\""
   }
 ];
+--fcc-editable-region--
 
 // initialize buttons
 button1.onclick = goStore;
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-036.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-036.md
index 905dbd0150d..70ae819b9da 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-036.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-036.md
@@ -151,6 +151,7 @@ button1.onclick = goStore;
 button2.onclick = goCave;
 button3.onclick = fightDragon;
 
+--fcc-editable-region--
 function update(location) {  
 }
 
@@ -173,6 +174,7 @@ function goStore() {
   button3.onclick = goTown;
   text.innerText = "You enter the store.";
 }
+--fcc-editable-region--
 
 function goCave() {
   console.log("Going to cave.");
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-037.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-037.md
index 7c50ee0efa6..42571267099 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-037.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-037.md
@@ -147,8 +147,10 @@ function update(location) {
   text.innerText = "You are in the town square. You see a sign that says \"Store\".";
 }
 
+--fcc-editable-region--
 function goTown() {
 }
+--fcc-editable-region--
 
 function goStore() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-038.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-038.md
index 77192c5840c..cfc3ecfa7eb 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-038.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-038.md
@@ -147,9 +147,11 @@ function update(location) {
   text.innerText = "You are in the town square. You see a sign that says \"Store\".";
 }
 
+--fcc-editable-region--
 function goTown() {
   update();
 }
+--fcc-editable-region--
 
 function goStore() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-039.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-039.md
index 6fd6638a0b4..34df678117e 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-039.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-039.md
@@ -145,9 +145,11 @@ function update(location) {
   text.innerText = "You are in the town square. You see a sign that says \"Store\".";
 }
 
+--fcc-editable-region--
 function goTown() {
   update(locations);
 }
+--fcc-editable-region--
 
 function goStore() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-040.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-040.md
index 0a8aad189bb..0bbe8455f0d 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-040.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-040.md
@@ -141,6 +141,7 @@ button1.onclick = goStore;
 button2.onclick = goCave;
 button3.onclick = fightDragon;
 
+--fcc-editable-region--
 function update(location) {  
   button1.innerText = "Go to store";
   button2.innerText = "Go to cave";
@@ -150,6 +151,7 @@ function update(location) {
   button3.onclick = fightDragon;
   text.innerText = "You are in the town square. You see a sign that says \"Store\".";
 }
+--fcc-editable-region--
 
 function goTown() {
   update(locations[0]);
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-041.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-041.md
index 7a4a8f05a66..088cdd1137e 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-041.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-041.md
@@ -141,6 +141,7 @@ button1.onclick = goStore;
 button2.onclick = goCave;
 button3.onclick = fightDragon;
 
+--fcc-editable-region--
 function update(location) {  
   button1.innerText = location["button text"];
   button2.innerText = "Go to cave";
@@ -150,6 +151,7 @@ function update(location) {
   button3.onclick = fightDragon;
   text.innerText = "You are in the town square. You see a sign that says \"Store\".";
 }
+--fcc-editable-region--
 
 function goTown() {
   update(locations[0]);
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-042.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-042.md
index 8dde5b45130..fe5cbb84f1e 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-042.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-042.md
@@ -146,6 +146,7 @@ button1.onclick = goStore;
 button2.onclick = goCave;
 button3.onclick = fightDragon;
 
+--fcc-editable-region--
 function update(location) {  
   button1.innerText = location["button text"][0];
   button2.innerText = "Go to cave";
@@ -155,6 +156,7 @@ function update(location) {
   button3.onclick = fightDragon;
   text.innerText = "You are in the town square. You see a sign that says \"Store\".";
 }
+--fcc-editable-region--
 
 function goTown() {
   update(locations[0]);
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-043.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-043.md
index 8f5370004fa..3cad05c3f08 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-043.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-043.md
@@ -151,6 +151,7 @@ button1.onclick = goStore;
 button2.onclick = goCave;
 button3.onclick = fightDragon;
 
+--fcc-editable-region--
 function update(location) {  
   button1.innerText = location["button text"][0];
   button2.innerText = location["button text"][1];
@@ -160,6 +161,7 @@ function update(location) {
   button3.onclick = fightDragon;
   text.innerText = "You are in the town square. You see a sign that says \"Store\".";
 }
+--fcc-editable-region--
 
 function goTown() {
   update(locations[0]);
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-044.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-044.md
index d29a7b316ea..8807c71d449 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-044.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-044.md
@@ -137,6 +137,7 @@ button1.onclick = goStore;
 button2.onclick = goCave;
 button3.onclick = fightDragon;
 
+--fcc-editable-region--
 function update(location) {  
   button1.innerText = location["button text"][0];
   button2.innerText = location["button text"][1];
@@ -146,6 +147,7 @@ function update(location) {
   button3.onclick = location["button functions"][2];
   text.innerText = "You are in the town square. You see a sign that says \"Store\".";
 }
+--fcc-editable-region--
 
 function goTown() {
   update(locations[0]);
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-045.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-045.md
index 9468f0a7dd9..9e934b24021 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-045.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-045.md
@@ -149,8 +149,10 @@ function goTown() {
   update(locations[0]);
 }
 
+--fcc-editable-region--
 function goStore() {
 }
+--fcc-editable-region--
 
 function goCave() {
   console.log("Going to cave.");
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-046.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-046.md
index 3b2f639d65d..b9dc011e1c3 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-046.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-046.md
@@ -127,6 +127,7 @@ const monsterStats = document.querySelector("#monsterStats");
 const monsterNameText = document.querySelector("#monsterName");
 const monsterHealthText = document.querySelector("#monsterHealth");
 
+--fcc-editable-region--
 const locations = [
   {
     name: "town square",
@@ -141,6 +142,7 @@ const locations = [
     text: "You enter the store."
   }
 ];
+--fcc-editable-region--
 
 // initialize buttons
 button1.onclick = goStore;
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-047.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-047.md
index 1091cf5c3ad..a9bbaaec82f 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-047.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-047.md
@@ -164,9 +164,11 @@ function goStore() {
   update(locations[1]);
 }
 
+--fcc-editable-region--
 function goCave() {
   console.log("Going to cave.");
 }
+--fcc-editable-region--
 
 function fightDragon() {
   console.log("Fighting dragon.");
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-048.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-048.md
index cb840ef9ddc..ff818678ba3 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-048.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-048.md
@@ -172,7 +172,9 @@ function buyHealth() {
 
 function buyWeapon() {
 }
+--fcc-editable-region--
 
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-049.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-049.md
index c88c87bf6ae..18f2d873090 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-049.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-049.md
@@ -169,8 +169,10 @@ function fightDragon() {
   console.log("Fighting dragon.");
 }
 
+--fcc-editable-region--
 function buyHealth() {
 }
+--fcc-editable-region--
 
 function buyWeapon() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-050.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-050.md
index 8ad750f1b9d..43f590d427c 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-050.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-050.md
@@ -167,9 +167,11 @@ function fightDragon() {
   console.log("Fighting dragon.");
 }
 
+--fcc-editable-region--
 function buyHealth() {
   gold = gold - 10;
 }
+--fcc-editable-region--
 
 function buyWeapon() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-051.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-051.md
index a65269467fa..224a4c22117 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-051.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-051.md
@@ -172,10 +172,12 @@ function fightDragon() {
   console.log("Fighting dragon.");
 }
 
+--fcc-editable-region--
 function buyHealth() {
   gold = gold - 10;
   health = health + 10;
 }
+--fcc-editable-region--
 
 function buyWeapon() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-052.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-052.md
index 157a580c416..f6bcc7f2ccc 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-052.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-052.md
@@ -170,10 +170,12 @@ function fightDragon() {
   console.log("Fighting dragon.");
 }
 
+--fcc-editable-region--
 function buyHealth() {
   gold -= 10;
   health += 10;
 }
+--fcc-editable-region--
 
 function buyWeapon() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-053.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-053.md
index 9c29275836c..1fc400d531f 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-053.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-053.md
@@ -187,12 +187,14 @@ function fightDragon() {
   console.log("Fighting dragon.");
 }
 
+--fcc-editable-region--
 function buyHealth() {
   gold -= 10;
   health += 10;
   goldText.innerText = gold;
   healthText.innerText = health;
 }
+--fcc-editable-region--
 
 function buyWeapon() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-054.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-054.md
index 716a03a30fc..5a05448ed6e 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-054.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-054.md
@@ -175,6 +175,7 @@ function fightDragon() {
   console.log("Fighting dragon.");
 }
 
+--fcc-editable-region--
 function buyHealth() {
   if (condition) {
     gold -= 10;
@@ -183,6 +184,7 @@ function buyHealth() {
     healthText.innerText = health;
   }
 }
+--fcc-editable-region--
 
 function buyWeapon() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-055.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-055.md
index defcad3336a..a4b13db4989 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-055.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-055.md
@@ -176,6 +176,7 @@ function fightDragon() {
   console.log("Fighting dragon.");
 }
 
+--fcc-editable-region--
 function buyHealth() {
   if (gold >= 10) {
     gold -= 10;
@@ -184,6 +185,7 @@ function buyHealth() {
     healthText.innerText = health;
   }
 }
+--fcc-editable-region--
 
 function buyWeapon() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-056.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-056.md
index 451150855c7..296af58ebae 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-056.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-056.md
@@ -169,6 +169,7 @@ function fightDragon() {
   console.log("Fighting dragon.");
 }
 
+--fcc-editable-region--
 function buyHealth() {
   if (gold >= 10) {
     gold -= 10;
@@ -179,6 +180,7 @@ function buyHealth() {
 
   }
 }
+--fcc-editable-region--
 
 function buyWeapon() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-057.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-057.md
index c840db886d3..29786f1f814 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-057.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-057.md
@@ -114,7 +114,9 @@ const goldText = document.querySelector("#goldText");
 const monsterStats = document.querySelector("#monsterStats");
 const monsterNameText = document.querySelector("#monsterName");
 const monsterHealthText = document.querySelector("#monsterHealth");
+--fcc-editable-region--
 
+--fcc-editable-region--
 const locations = [
   {
     name: "town square",
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-058.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-058.md
index 568304eba7c..e62cb86bddf 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-058.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-058.md
@@ -120,7 +120,9 @@ const monsterStats = document.querySelector("#monsterStats");
 const monsterNameText = document.querySelector("#monsterName");
 const monsterHealthText = document.querySelector("#monsterHealth");
 
+--fcc-editable-region--
 const weapons = [];
+--fcc-editable-region--
 
 const locations = [
   {
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-059.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-059.md
index 2ec39a7f254..da80e729fef 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-059.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-059.md
@@ -197,8 +197,10 @@ function buyHealth() {
   }
 }
 
+--fcc-editable-region--
 function buyWeapon() {
 }
+--fcc-editable-region--
 
 function fightSlime() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-060.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-060.md
index 3be3e1091fc..2bab4b8ff6a 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-060.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-060.md
@@ -197,11 +197,13 @@ function buyHealth() {
   }
 }
 
+--fcc-editable-region--
 function buyWeapon() {
   if (gold >= 30) {
     
   }
 }
+--fcc-editable-region--
 
 function fightSlime() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-061.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-061.md
index fc1252dc9b2..def7c572f33 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-061.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-061.md
@@ -197,11 +197,13 @@ function buyHealth() {
   }
 }
 
+--fcc-editable-region--
 function buyWeapon() {
   if (gold >= 30) {
     gold -= 30;
   }
 }
+--fcc-editable-region--
 
 function fightSlime() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-062.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-062.md
index b52630d4eb6..31d8cda887f 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-062.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-062.md
@@ -205,12 +205,14 @@ function buyHealth() {
   }
 }
 
+--fcc-editable-region--
 function buyWeapon() {
   if (gold >= 30) {
     gold -= 30;
     currentWeapon += 1;
   }
 }
+--fcc-editable-region--
 
 function fightSlime() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-063.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-063.md
index bda92f3098b..7a24cdbbf7d 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-063.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-063.md
@@ -201,12 +201,14 @@ function buyHealth() {
   }
 }
 
+--fcc-editable-region--
 function buyWeapon() {
   if (gold >= 30) {
     gold -= 30;
     currentWeapon++;
   }
 }
+--fcc-editable-region--
 
 function fightSlime() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-064.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-064.md
index d1890d71ebd..fedaac96fe8 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-064.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-064.md
@@ -197,6 +197,7 @@ function buyHealth() {
   }
 }
 
+--fcc-editable-region--
 function buyWeapon() {
   if (gold >= 30) {
     gold -= 30;
@@ -205,6 +206,7 @@ function buyWeapon() {
     text.innerText = "You now have a new weapon.";
   }
 }
+--fcc-editable-region--
 
 function fightSlime() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-065.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-065.md
index 731001d5483..81ef3f2f64f 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-065.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-065.md
@@ -197,6 +197,7 @@ function buyHealth() {
   }
 }
 
+--fcc-editable-region--
 function buyWeapon() {
   if (gold >= 30) {
     gold -= 30;
@@ -206,6 +207,7 @@ function buyWeapon() {
     text.innerText = "You now have a new weapon.";
   }
 }
+--fcc-editable-region--
 
 function fightSlime() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-066.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-066.md
index 7a252de6cca..6a32637e6b3 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-066.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-066.md
@@ -199,6 +199,7 @@ function buyHealth() {
   }
 }
 
+--fcc-editable-region--
 function buyWeapon() {
   if (gold >= 30) {
     gold -= 30;
@@ -208,6 +209,7 @@ function buyWeapon() {
     text.innerText = "You now have a new weapon.";
   }
 }
+--fcc-editable-region--
 
 function fightSlime() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-067.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-067.md
index ccdab9bfc9f..3ae3f974b7a 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-067.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-067.md
@@ -208,6 +208,7 @@ function buyHealth() {
   }
 }
 
+--fcc-editable-region--
 function buyWeapon() {
   if (gold >= 30) {
     gold -= 30;
@@ -217,6 +218,7 @@ function buyWeapon() {
     text.innerText = "You now have a new weapon.";
   }
 }
+--fcc-editable-region--
 
 function fightSlime() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-068.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-068.md
index 5b3355b0e9d..f6b942e5ff8 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-068.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-068.md
@@ -204,6 +204,7 @@ function buyHealth() {
   }
 }
 
+--fcc-editable-region--
 function buyWeapon() {
   if (gold >= 30) {
     gold -= 30;
@@ -213,6 +214,7 @@ function buyWeapon() {
     text.innerText = "You now have a " + newWeapon + ".";
   }
 }
+--fcc-editable-region--
 
 function fightSlime() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-069.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-069.md
index b54c6df1dd7..1107d79cfac 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-069.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-069.md
@@ -203,6 +203,7 @@ function buyHealth() {
   }
 }
 
+--fcc-editable-region--
 function buyWeapon() {
   if (gold >= 30) {
     gold -= 30;
@@ -213,6 +214,7 @@ function buyWeapon() {
     inventory.push(newWeapon);
   }
 }
+--fcc-editable-region--
 
 function fightSlime() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-070.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-070.md
index 0e2ac994f0d..ee778ab8d09 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-070.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-070.md
@@ -203,6 +203,7 @@ function buyHealth() {
   }
 }
 
+--fcc-editable-region--
 function buyWeapon() {
   if (gold >= 30) {
     gold -= 30;
@@ -214,6 +215,7 @@ function buyWeapon() {
     text.innerText += " In your inventory you have: ";
   }
 }
+--fcc-editable-region--
 
 function fightSlime() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-071.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-071.md
index babc6b929d8..c068f113bc8 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-071.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-071.md
@@ -203,6 +203,7 @@ function buyHealth() {
   }
 }
 
+--fcc-editable-region--
 function buyWeapon() {
   if (gold >= 30) {
     gold -= 30;
@@ -214,6 +215,7 @@ function buyWeapon() {
     text.innerText += " In your inventory you have: " + inventory;
   }
 }
+--fcc-editable-region--
 
 function fightSlime() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-072.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-072.md
index b37944ae9c8..50a6f09b401 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-072.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-072.md
@@ -208,6 +208,7 @@ function buyHealth() {
   }
 }
 
+--fcc-editable-region--
 function buyWeapon() {
   if (gold >= 30) {
     gold -= 30;
@@ -221,6 +222,7 @@ function buyWeapon() {
     text.innerText = "You do not have enough gold to buy a weapon.";
   }
 }
+--fcc-editable-region--
 
 function fightSlime() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-073.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-073.md
index 433ce222707..b2c0c1f01a7 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-073.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-073.md
@@ -203,6 +203,7 @@ function buyHealth() {
   }
 }
 
+--fcc-editable-region--
 function buyWeapon() {
   if (currentWeapon < 3) {
     if (gold >= 30) {
@@ -218,6 +219,7 @@ function buyWeapon() {
     }
   }
 }
+--fcc-editable-region--
 
 function fightSlime() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-074.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-074.md
index 7e8fcaa74dd..32006336bcf 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-074.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-074.md
@@ -203,6 +203,7 @@ function buyHealth() {
   }
 }
 
+--fcc-editable-region--
 function buyWeapon() {
   if (currentWeapon < weapons.length) {
     if (gold >= 30) {
@@ -218,6 +219,7 @@ function buyWeapon() {
     }
   }
 }
+--fcc-editable-region--
 
 function fightSlime() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-075.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-075.md
index 98489200073..18a03c3c054 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-075.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-075.md
@@ -203,6 +203,7 @@ function buyHealth() {
   }
 }
 
+--fcc-editable-region--
 function buyWeapon() {
   if (currentWeapon < weapons.length - 1) {
     if (gold >= 30) {
@@ -218,6 +219,7 @@ function buyWeapon() {
     }
   }
 }
+--fcc-editable-region--
 
 function fightSlime() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-076.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-076.md
index 3cff5bdd08f..cf6ee6194ab 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-076.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-076.md
@@ -203,6 +203,7 @@ function buyHealth() {
   }
 }
 
+--fcc-editable-region--
 function buyWeapon() {
   if (currentWeapon < weapons.length - 1) {
     if (gold >= 30) {
@@ -220,6 +221,7 @@ function buyWeapon() {
     text.innerText = "You already have the most powerful weapon!";
   }
 }
+--fcc-editable-region--
 
 function fightSlime() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-077.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-077.md
index 1059b13bbb0..b209274d618 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-077.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-077.md
@@ -216,7 +216,9 @@ function buyWeapon() {
     button2.onclick = sellWeapon;
   }
 }
+--fcc-editable-region--
 
+--fcc-editable-region--
 function fightSlime() {
 }
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-078.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-078.md
index 588c67330a6..aec2b0f7031 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-078.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-078.md
@@ -221,8 +221,10 @@ function buyWeapon() {
   }
 }
 
+--fcc-editable-region--
 function sellWeapon() {
 }
+--fcc-editable-region--
 
 function fightSlime() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-079.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-079.md
index 2ced20d3e96..504b251bd23 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-079.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-079.md
@@ -230,11 +230,13 @@ function buyWeapon() {
   }
 }
 
+--fcc-editable-region--
 function sellWeapon() {
   if (inventory.length > 1) {
 
   }
 }
+--fcc-editable-region--
 
 function fightSlime() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-080.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-080.md
index 3ded9ccae9a..f99543c5662 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-080.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-080.md
@@ -221,12 +221,14 @@ function buyWeapon() {
   }
 }
 
+--fcc-editable-region--
 function sellWeapon() {
   if (inventory.length > 1) {
     gold += 15;
     goldText.innerText = gold;
   }
 }
+--fcc-editable-region--
 
 function fightSlime() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-081.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-081.md
index 1b72cd17ca3..d53a1388f6e 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-081.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-081.md
@@ -229,6 +229,7 @@ function buyWeapon() {
   }
 }
 
+--fcc-editable-region--
 function sellWeapon() {
   if (inventory.length > 1) {
     gold += 15;
@@ -236,6 +237,7 @@ function sellWeapon() {
     let currentWeapon;
   }
 }
+--fcc-editable-region--
 
 function fightSlime() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-082.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-082.md
index 81186259718..6443b0efbcf 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-082.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-082.md
@@ -219,6 +219,7 @@ function buyWeapon() {
   }
 }
 
+--fcc-editable-region--
 function sellWeapon() {
   if (inventory.length > 1) {
     gold += 15;
@@ -227,6 +228,7 @@ function sellWeapon() {
     
   }
 }
+--fcc-editable-region--
 
 function fightSlime() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-083.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-083.md
index 88ff205e6ca..5ff815c248f 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-083.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-083.md
@@ -221,6 +221,7 @@ function buyWeapon() {
   }
 }
 
+--fcc-editable-region--
 function sellWeapon() {
   if (inventory.length > 1) {
     gold += 15;
@@ -230,6 +231,7 @@ function sellWeapon() {
     
   }
 }
+--fcc-editable-region--
 
 function fightSlime() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-084.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-084.md
index be2e8cdefe0..5d60f311b1a 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-084.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-084.md
@@ -222,6 +222,7 @@ function buyWeapon() {
   }
 }
 
+--fcc-editable-region--
 function sellWeapon() {
   if (inventory.length > 1) {
     gold += 15;
@@ -231,6 +232,7 @@ function sellWeapon() {
     text.innerText += " In your inventory you have: " + inventory;
   }
 }
+--fcc-editable-region--
 
 function fightSlime() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-085.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-085.md
index 29a6280c7e0..7ab7acaf3d8 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-085.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-085.md
@@ -121,6 +121,10 @@ const monsterStats = document.querySelector("#monsterStats");
 const monsterNameText = document.querySelector("#monsterName");
 const monsterHealthText = document.querySelector("#monsterHealth");
 
+--fcc-editable-region--
+
+--fcc-editable-region--
+
 const weapons = [
   {
     name: "stick",
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-086.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-086.md
index 76ab742e7ea..ac7cbca6f6b 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-086.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-086.md
@@ -242,6 +242,7 @@ function sellWeapon() {
     text.innerText = "Don't sell your only weapon!";
   }
 }
+--fcc-editable-region--
 
 function fightSlime() {
 }
@@ -253,6 +254,8 @@ function fightDragon() {
   console.log("Fighting dragon.");
 }
 
+--fcc-editable-region--
+
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-087.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-087.md
index 1e3795ea67d..1986854e152 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-087.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-087.md
@@ -245,8 +245,10 @@ function sellWeapon() {
   }
 }
 
+--fcc-editable-region--
 function fightSlime() {
 }
+--fcc-editable-region--
 
 function fightBeast() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-088.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-088.md
index 93cc8a7f209..e1ea646ce71 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-088.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-088.md
@@ -251,12 +251,14 @@ function fightSlime() {
   goFight();
 }
 
+--fcc-editable-region--
 function fightBeast() {
 }
 
 function fightDragon() {
   console.log("Fighting dragon.");
 }
+--fcc-editable-region--
 
 function goFight() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-089.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-089.md
index 01570e01fd1..4d45c21084c 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-089.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-089.md
@@ -162,6 +162,7 @@ const monsters = [
   }
 ];
 
+--fcc-editable-region--
 const locations = [
   {
     name: "town square",
@@ -182,6 +183,7 @@ const locations = [
     text: "You enter the cave. You see some monsters."
   }
 ];
+--fcc-editable-region--
 
 // initialize buttons
 button1.onclick = goStore;
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-090.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-090.md
index 8a954853384..e9bd12ccbf7 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-090.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-090.md
@@ -266,6 +266,9 @@ function fightDragon() {
 
 function goFight() {
 }
+--fcc-editable-region--
+
+--fcc-editable-region--
 
 </script>
 ```
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-091.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-091.md
index e03aa3c88c0..62f1e07b705 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-091.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-091.md
@@ -264,8 +264,10 @@ function fightDragon() {
   goFight();
 }
 
+--fcc-editable-region--
 function goFight() {
 }
+--fcc-editable-region--
 
 function attack() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-092.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-092.md
index 52eaee7eebb..302eeb12198 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-092.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-092.md
@@ -277,9 +277,11 @@ function fightDragon() {
   goFight();
 }
 
+--fcc-editable-region--
 function goFight() {
   update(locations[3]);
 }
+--fcc-editable-region--
 
 function attack() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-093.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-093.md
index fac7bcb4c09..a4efd1dc333 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-093.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-093.md
@@ -270,10 +270,12 @@ function fightDragon() {
   goFight();
 }
 
+--fcc-editable-region--
 function goFight() {
   update(locations[3]);
   monsterHealth = monsters[fighting].health;
 }
+--fcc-editable-region--
 
 function attack() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-094.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-094.md
index 3a18583defe..999e6c1c192 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-094.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-094.md
@@ -279,11 +279,13 @@ function fightDragon() {
   goFight();
 }
 
+--fcc-editable-region--
 function goFight() {
   update(locations[3]);
   monsterHealth = monsters[fighting].health;
   monsterStats.style.display = "block";
 }
+--fcc-editable-region--
 
 function attack() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-095.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-095.md
index 01e3fbca480..ec0d673d9bd 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-095.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-095.md
@@ -272,8 +272,10 @@ function goFight() {
   monsterHealthText.innerText = monsterHealth;
 }
 
+--fcc-editable-region--
 function attack() {
 }
+--fcc-editable-region--
 
 function dodge() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-096.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-096.md
index dcfee0cabf6..643ccb35c2d 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-096.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-096.md
@@ -277,9 +277,11 @@ function goFight() {
   monsterHealthText.innerText = monsterHealth;
 }
 
+--fcc-editable-region--
 function attack() {
   text.innerText = "The " + monsters[fighting].name + " attacks.";
 }
+--fcc-editable-region--
 
 function dodge() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-097.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-097.md
index a89180ed3ad..efa7fe60eb3 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-097.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-097.md
@@ -272,10 +272,12 @@ function goFight() {
   monsterHealthText.innerText = monsterHealth;
 }
 
+--fcc-editable-region--
 function attack() {
   text.innerText = "The " + monsters[fighting].name + " attacks.";
   text.innerText += " You attack it with your " + weapons[currentWeapon].name + ".";
 }
+--fcc-editable-region--
 
 function dodge() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-098.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-098.md
index 63702caa250..6621c799cd7 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-098.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-098.md
@@ -272,11 +272,13 @@ function goFight() {
   monsterHealthText.innerText = monsterHealth;
 }
 
+--fcc-editable-region--
 function attack() {
   text.innerText = "The " + monsters[fighting].name + " attacks.";
   text.innerText += " You attack it with your " + weapons[currentWeapon].name + ".";
   health -= monsters[fighting].level;
 }
+--fcc-editable-region--
 
 function dodge() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-099.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-099.md
index 45ab968fd05..640770c56d0 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-099.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-099.md
@@ -278,12 +278,14 @@ function goFight() {
   monsterHealthText.innerText = monsterHealth;
 }
 
+--fcc-editable-region--
 function attack() {
   text.innerText = "The " + monsters[fighting].name + " attacks.";
   text.innerText += " You attack it with your " + weapons[currentWeapon].name + ".";
   health -= monsters[fighting].level;
   monsterHealth -= weapons[currentWeapon].power;
 }
+--fcc-editable-region--
 
 function dodge() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-100.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-100.md
index b01e1e19a4c..0c29c7a1517 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-100.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-100.md
@@ -277,12 +277,14 @@ function goFight() {
   monsterHealthText.innerText = monsterHealth;
 }
 
+--fcc-editable-region--
 function attack() {
   text.innerText = "The " + monsters[fighting].name + " attacks.";
   text.innerText += " You attack it with your " + weapons[currentWeapon].name + ".";
   health -= monsters[fighting].level;
   monsterHealth -= weapons[currentWeapon].power + Math.floor(Math.random() * xp) + 1;
 }
+--fcc-editable-region--
 
 function dodge() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-101.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-101.md
index 89c199a1f00..1848ec7c553 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-101.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-101.md
@@ -276,6 +276,7 @@ function goFight() {
   monsterHealthText.innerText = monsterHealth;
 }
 
+--fcc-editable-region--
 function attack() {
   text.innerText = "The " + monsters[fighting].name + " attacks.";
   text.innerText += " You attack it with your " + weapons[currentWeapon].name + ".";
@@ -284,6 +285,7 @@ function attack() {
   healthText.innerText = health;
   monsterHealthText.innerText = monsterHealth;
 }
+--fcc-editable-region--
 
 function dodge() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-102.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-102.md
index eefaad7d5df..5829e5477aa 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-102.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-102.md
@@ -290,6 +290,7 @@ function goFight() {
   monsterHealthText.innerText = monsterHealth;
 }
 
+--fcc-editable-region--
 function attack() {
   text.innerText = "The " + monsters[fighting].name + " attacks.";
   text.innerText += " You attack it with your " + weapons[currentWeapon].name + ".";
@@ -301,6 +302,7 @@ function attack() {
     lose();
   }
 }
+--fcc-editable-region--
 
 function dodge() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-103.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-103.md
index 8005af3c3c5..4eed4b4e491 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-103.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-103.md
@@ -288,7 +288,9 @@ function attack() {
 
 function dodge() {
 }
+--fcc-editable-region--
 
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-104.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-104.md
index 69d42981164..29135b962ec 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-104.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-104.md
@@ -288,8 +288,10 @@ function attack() {
   }
 }
 
+--fcc-editable-region--
 function dodge() {
 }
+--fcc-editable-region--
 
 function defeatMonster() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-105.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-105.md
index 229ceffc51d..1c1ec2be744 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-105.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-105.md
@@ -292,8 +292,10 @@ function dodge() {
   text.innerText = "You dodge the attack from the " + monsters[fighting].name + ".";
 }
 
+--fcc-editable-region--
 function defeatMonster() {
 }
+--fcc-editable-region--
 
 function lose() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-106.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-106.md
index 7bd670e908f..d889433d448 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-106.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-106.md
@@ -290,9 +290,11 @@ function dodge() {
   text.innerText = "You dodge the attack from the " + monsters[fighting].name + ".";
 }
 
+--fcc-editable-region--
 function defeatMonster() {
   gold += Math.floor(monsters[fighting].level * 6.7);
 }
+--fcc-editable-region--
 
 function lose() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-107.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-107.md
index 8eb68ab2e6d..30c8fcf6412 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-107.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-107.md
@@ -294,10 +294,12 @@ function dodge() {
   text.innerText = "You dodge the attack from the " + monsters[fighting].name + ".";
 }
 
+--fcc-editable-region--
 function defeatMonster() {
   gold += Math.floor(monsters[fighting].level * 6.7);
   xp += monsters[fighting].level;
 }
+--fcc-editable-region--
 
 function lose() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-108.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-108.md
index b12f8e745da..9088c7b06cb 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-108.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-108.md
@@ -292,6 +292,7 @@ function dodge() {
   text.innerText = "You dodge the attack from the " + monsters[fighting].name + ".";
 }
 
+--fcc-editable-region--
 function defeatMonster() {
   gold += Math.floor(monsters[fighting].level * 6.7);
   xp += monsters[fighting].level;
@@ -299,6 +300,7 @@ function defeatMonster() {
   xpText.innerText = xp;
 
 }
+--fcc-editable-region--
 
 function lose() {
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-109.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-109.md
index ce8171b1188..7fe08268fb2 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-109.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-109.md
@@ -162,6 +162,7 @@ const monsters = [
   }
 ];
 
+--fcc-editable-region--
 const locations = [
   {
     name: "town square",
@@ -188,6 +189,7 @@ const locations = [
     text: "You are fighting a monster."
   }
 ];
+--fcc-editable-region--
 
 // initialize buttons
 button1.onclick = goStore;
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-110.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-110.md
index 5ee8837d7a5..1cfdea2dfc9 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-110.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-110.md
@@ -162,6 +162,7 @@ const monsters = [
   }
 ];
 
+--fcc-editable-region--
 const locations = [
   {
     name: "town square",
@@ -194,6 +195,7 @@ const locations = [
     text: "The monster screams Arg! as it dies. You gain experience points and find gold."
   }
 ];
+--fcc-editable-region--
 
 // initialize buttons
 button1.onclick = goStore;
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-111.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-111.md
index d9bb21f1ff5..6fbab2406eb 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-111.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-111.md
@@ -160,6 +160,7 @@ const monsters = [
   }
 ];
 
+--fcc-editable-region--
 const locations = [
   {
     name: "town square",
@@ -192,6 +193,7 @@ const locations = [
     text: 'The monster screams "Arg!" as it dies. You gain experience points and find gold.'
   }
 ];
+--fcc-editable-region--
 
 // initialize buttons
 button1.onclick = goStore;
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-112.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-112.md
index 89c8db19dea..ed31ccf5c8f 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-112.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-112.md
@@ -199,6 +199,7 @@ button1.onclick = goStore;
 button2.onclick = goCave;
 button3.onclick = fightDragon;
 
+--fcc-editable-region--
 function update(location) {  
   button1.innerText = location["button text"][0];
   button2.innerText = location["button text"][1];
@@ -208,6 +209,7 @@ function update(location) {
   button3.onclick = location["button functions"][2];
   text.innerText = location.text;
 }
+--fcc-editable-region--
 
 function goTown() {
   update(locations[0]);
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-113.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-113.md
index 1a58f40c2be..88c9c8c55fc 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-113.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-113.md
@@ -314,8 +314,10 @@ function defeatMonster() {
   update(locations[4]);
 }
 
+--fcc-editable-region--
 function lose() {
 }
+--fcc-editable-region--
 
 </script>
 ```
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-114.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-114.md
index fc16a45a17a..8ee9f875e24 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-114.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-114.md
@@ -333,7 +333,9 @@ function defeatMonster() {
 function lose() {
   update(locations[5]);
 }
+--fcc-editable-region--
 
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-115.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-115.md
index 197d2294c80..0de57082f1f 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-115.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-115.md
@@ -291,6 +291,7 @@ function goFight() {
   monsterHealthText.innerText = monsterHealth;
 }
 
+--fcc-editable-region--
 function attack() {
   text.innerText = "The " + monsters[fighting].name + " attacks.";
   text.innerText += " You attack it with your " + weapons[currentWeapon].name + ".";
@@ -304,6 +305,7 @@ function attack() {
     defeatMonster();
   }
 }
+--fcc-editable-region--
 
 function dodge() {
   text.innerText = "You dodge the attack from the " + monsters[fighting].name + ".";
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-116.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-116.md
index 54eb6bd66e7..957cfb236a4 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-116.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-116.md
@@ -305,6 +305,7 @@ function goFight() {
   monsterHealthText.innerText = monsterHealth;
 }
 
+--fcc-editable-region--
 function attack() {
   text.innerText = "The " + monsters[fighting].name + " attacks.";
   text.innerText += " You attack it with your " + weapons[currentWeapon].name + ".";
@@ -322,6 +323,7 @@ function attack() {
     }
   }
 }
+--fcc-editable-region--
 
 function dodge() {
   text.innerText = "You dodge the attack from the " + monsters[fighting].name + ".";
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-117.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-117.md
index f69b37cc639..653c285a08a 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-117.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-117.md
@@ -314,6 +314,9 @@ function defeatMonster() {
 function lose() {
   update(locations[5]);
 }
+--fcc-editable-region--
+
+--fcc-editable-region--
 
 function restart() {
   xp = 0;
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-118.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-118.md
index 68c165507a2..4f181f255ed 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-118.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-118.md
@@ -157,6 +157,7 @@ const monsters = [
   }
 ];
 
+--fcc-editable-region--
 const locations = [
   {
     name: "town square",
@@ -195,6 +196,7 @@ const locations = [
     text: "You die. ☠️"
   }
 ];
+--fcc-editable-region--
 
 // initialize buttons
 button1.onclick = goStore;
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-119.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-119.md
index 2b93d6ae76b..1c46903b021 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-119.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-119.md
@@ -298,6 +298,7 @@ function goFight() {
   monsterHealthText.innerText = monsterHealth;
 }
 
+--fcc-editable-region--
 function attack() {
   text.innerText = "The " + monsters[fighting].name + " attacks.";
   text.innerText += " You attack it with your " + weapons[currentWeapon].name + ".";
@@ -311,6 +312,7 @@ function attack() {
     fighting === 2 ? winGame() : defeatMonster();
   }
 }
+--fcc-editable-region--
 
 function dodge() {
   text.innerText = "You dodge the attack from the " + monsters[fighting].name + ".";
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-120.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-120.md
index 7b31e33093b..45e45af1d4c 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-120.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-120.md
@@ -307,7 +307,9 @@ function attack() {
     fighting === 2 ? winGame() : defeatMonster();
   }
 }
+--fcc-editable-region--
 
+--fcc-editable-region--
 function dodge() {
   text.innerText = "You dodge the attack from the " + monsters[fighting].name + ".";
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-121.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-121.md
index 36181879ebf..61569608809 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-121.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-121.md
@@ -310,9 +310,11 @@ function attack() {
   }
 }
 
+--fcc-editable-region--
 function getMonsterAttackValue(level) {
 
 }
+--fcc-editable-region--
 
 function dodge() {
   text.innerText = "You dodge the attack from the " + monsters[fighting].name + ".";
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-122.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-122.md
index d09e12b2d2b..8f8845d28d0 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-122.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-122.md
@@ -312,9 +312,11 @@ function attack() {
   }
 }
 
+--fcc-editable-region--
 function getMonsterAttackValue(level) {
   const hit = (level * 5) - (Math.floor(Math.random() * xp));
 }
+--fcc-editable-region--
 
 function dodge() {
   text.innerText = "You dodge the attack from the " + monsters[fighting].name + ".";
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-123.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-123.md
index c57171f7411..f5a00530af8 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-123.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-123.md
@@ -318,10 +318,12 @@ function attack() {
   }
 }
 
+--fcc-editable-region--
 function getMonsterAttackValue(level) {
   const hit = (level * 5) - (Math.floor(Math.random() * xp));
   console.log(hit);
 }
+--fcc-editable-region--
 
 function dodge() {
   text.innerText = "You dodge the attack from the " + monsters[fighting].name + ".";
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-124.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-124.md
index 1a7e97dc6ae..f39bc19d78b 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-124.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-124.md
@@ -320,11 +320,13 @@ function attack() {
   }
 }
 
+--fcc-editable-region--
 function getMonsterAttackValue(level) {
   const hit = (level * 5) - (Math.floor(Math.random() * xp));
   console.log(hit);
   return hit;
 }
+--fcc-editable-region--
 
 function dodge() {
   text.innerText = "You dodge the attack from the " + monsters[fighting].name + ".";
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-125.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-125.md
index 2161e069e1b..7c8609e3249 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-125.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-125.md
@@ -299,6 +299,7 @@ function goFight() {
   monsterHealthText.innerText = monsterHealth;
 }
 
+--fcc-editable-region--
 function attack() {
   text.innerText = "The " + monsters[fighting].name + " attacks.";
   text.innerText += " You attack it with your " + weapons[currentWeapon].name + ".";
@@ -312,6 +313,7 @@ function attack() {
     fighting === 2 ? winGame() : defeatMonster();
   }
 }
+--fcc-editable-region--
 
 function getMonsterAttackValue(level) {
   const hit = (level * 5) - (Math.floor(Math.random() * xp));
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-126.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-126.md
index 6051ca5b453..02324cda710 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-126.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-126.md
@@ -306,6 +306,7 @@ function goFight() {
   monsterHealthText.innerText = monsterHealth;
 }
 
+--fcc-editable-region--
 function attack() {
   text.innerText = "The " + monsters[fighting].name + " attacks.";
   text.innerText += " You attack it with your " + weapons[currentWeapon].name + ".";
@@ -323,6 +324,7 @@ function attack() {
     fighting === 2 ? winGame() : defeatMonster();
   }
 }
+--fcc-editable-region--
 
 function getMonsterAttackValue(level) {
   const hit = (level * 5) - (Math.floor(Math.random() * xp));
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-127.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-127.md
index 057b92ae414..db612f5a93c 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-127.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-127.md
@@ -298,6 +298,7 @@ function goFight() {
   monsterHealthText.innerText = monsterHealth;
 }
 
+--fcc-editable-region--
 function attack() {
   text.innerText = "The " + monsters[fighting].name + " attacks.";
   text.innerText += " You attack it with your " + weapons[currentWeapon].name + ".";
@@ -314,6 +315,7 @@ function attack() {
     fighting === 2 ? winGame() : defeatMonster();
   }
 }
+--fcc-editable-region--
 
 function getMonsterAttackValue(level) {
   const hit = (level * 5) - (Math.floor(Math.random() * xp));
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-128.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-128.md
index aefeb675e51..8b6b2680924 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-128.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-128.md
@@ -332,7 +332,9 @@ function getMonsterAttackValue(level) {
   console.log(hit);
   return hit > 0 ? hit : 0;
 }
+--fcc-editable-region--
 
+--fcc-editable-region--
 function dodge() {
   text.innerText = "You dodge the attack from the " + monsters[fighting].name + ".";
 }
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-129.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-129.md
index 19699584e6f..b16bd94656c 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-129.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-129.md
@@ -327,9 +327,11 @@ function getMonsterAttackValue(level) {
   return hit > 0 ? hit : 0;
 }
 
+--fcc-editable-region--
 function isMonsterHit() {
   return Math.random() > .2;
 }
+--fcc-editable-region--
 
 function dodge() {
   text.innerText = "You dodge the attack from the " + monsters[fighting].name + ".";
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-130.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-130.md
index 8be35349312..3d9e25b8f83 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-130.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-130.md
@@ -297,6 +297,7 @@ function goFight() {
   monsterHealthText.innerText = monsterHealth;
 }
 
+--fcc-editable-region--
 function attack() {
   text.innerText = "The " + monsters[fighting].name + " attacks.";
   text.innerText += " You attack it with your " + weapons[currentWeapon].name + ".";
@@ -315,6 +316,7 @@ function attack() {
     fighting === 2 ? winGame() : defeatMonster();
   }
 }
+--fcc-editable-region--
 
 function getMonsterAttackValue(level) {
   const hit = (level * 5) - (Math.floor(Math.random() * xp));
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-131.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-131.md
index fd2d242e61a..3f3c5da2ad7 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-131.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-131.md
@@ -312,6 +312,7 @@ function goFight() {
   monsterHealthText.innerText = monsterHealth;
 }
 
+--fcc-editable-region--
 function attack() {
   text.innerText = "The " + monsters[fighting].name + " attacks.";
   text.innerText += " You attack it with your " + weapons[currentWeapon].name + ".";
@@ -334,6 +335,7 @@ function attack() {
 
   }
 }
+--fcc-editable-region--
 
 function getMonsterAttackValue(level) {
   const hit = (level * 5) - (Math.floor(Math.random() * xp));
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-132.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-132.md
index df68f2bb8d5..e4ae436254a 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-132.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-132.md
@@ -298,6 +298,7 @@ function goFight() {
   monsterHealthText.innerText = monsterHealth;
 }
 
+--fcc-editable-region--
 function attack() {
   text.innerText = "The " + monsters[fighting].name + " attacks.";
   text.innerText += " You attack it with your " + weapons[currentWeapon].name + ".";
@@ -320,6 +321,7 @@ function attack() {
     text.innerText += " Your " +  inventory.pop() + " breaks.";
   }
 }
+--fcc-editable-region--
 
 function getMonsterAttackValue(level) {
   const hit = (level * 5) - (Math.floor(Math.random() * xp));
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-133.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-133.md
index 2ee219c7dbb..6a3acd2f587 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-133.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-133.md
@@ -308,6 +308,7 @@ function goFight() {
   monsterHealthText.innerText = monsterHealth;
 }
 
+--fcc-editable-region--
 function attack() {
   text.innerText = "The " + monsters[fighting].name + " attacks.";
   text.innerText += " You attack it with your " + weapons[currentWeapon].name + ".";
@@ -331,6 +332,7 @@ function attack() {
     currentWeapon--;
   }
 }
+--fcc-editable-region--
 
 function getMonsterAttackValue(level) {
   const hit = (level * 5) - (Math.floor(Math.random() * xp));
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-134.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-134.md
index 9deeb2dc71d..b3a062fc19c 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-134.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-134.md
@@ -363,6 +363,9 @@ function restart() {
   xpText.innerText = xp;
   goTown();
 }
+--fcc-editable-region--
+
+--fcc-editable-region--
 
 </script>
 ```
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-135.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-135.md
index 3bffb22d939..99416aeec70 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-135.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-135.md
@@ -163,6 +163,7 @@ const monsters = [
   }
 ];
 
+--fcc-editable-region--
 const locations = [
   {
     name: "town square",
@@ -207,6 +208,7 @@ const locations = [
     text: "You defeat the dragon! YOU WIN THE GAME! 🎉" 
   }
 ];
+--fcc-editable-region--
 
 // initialize buttons
 button1.onclick = goStore;
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-136.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-136.md
index 4fea2ef564a..168f19f1f76 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-136.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-136.md
@@ -375,6 +375,9 @@ function easterEgg() {
   update(locations[7]);
 }
 
+--fcc-editable-region--
+
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-137.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-137.md
index 0e4bee42617..b707347d32f 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-137.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-137.md
@@ -375,6 +375,9 @@ function pickEight() {
   pick(8);
 }
 
+--fcc-editable-region--
+
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-138.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-138.md
index e398bc4a252..7fd079db470 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-138.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-138.md
@@ -380,9 +380,11 @@ function pickEight() {
   pick(8);
 }
 
+--fcc-editable-region--
 function pick(guess) {
 
 }
+--fcc-editable-region--
 
 </script>
 ```
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-139.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-139.md
index 4dd13fa1eeb..3f45adcb867 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-139.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-139.md
@@ -394,9 +394,11 @@ function pickEight() {
   pick(8);
 }
 
+--fcc-editable-region--
 function pick(guess) {
   let numbers = [];
 }
+--fcc-editable-region--
 
 </script>
 ```
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-140.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-140.md
index 7149f553592..30f62a0c22c 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-140.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-140.md
@@ -380,12 +380,14 @@ function pickEight() {
   pick(8);
 }
 
+--fcc-editable-region--
 function pick(guess) {
   let numbers = [];
   while(numbers.length < 10) {
 
   }
 }
+--fcc-editable-region--
 
 </script>
 ```
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-141.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-141.md
index 6c0daac0292..75e21830b61 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-141.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-141.md
@@ -376,12 +376,14 @@ function pickEight() {
   pick(8);
 }
 
+--fcc-editable-region--
 function pick(guess) {
   let numbers = [];
   while(numbers.length < 10) {
     numbers.push(Math.floor(Math.random() * 11));
   }
 }
+--fcc-editable-region--
 
 </script>
 ```
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-142.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-142.md
index aed0ef7d3fd..63c76f7c69f 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-142.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-142.md
@@ -388,6 +388,7 @@ function pickEight() {
   pick(8);
 }
 
+--fcc-editable-region--
 function pick(guess) {
   let numbers = [];
   while(numbers.length < 10) {
@@ -396,6 +397,7 @@ function pick(guess) {
 
   text.innerText = "You picked " + guess + ". Here are the random numbers:";
 }
+--fcc-editable-region--
 
 </script>
 ```
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-143.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-143.md
index 90b855592da..64536ed94d3 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-143.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-143.md
@@ -383,6 +383,7 @@ function pickEight() {
   pick(8);
 }
 
+--fcc-editable-region--
 function pick(guess) {
   let numbers = [];
   while(numbers.length < 10) {
@@ -391,6 +392,7 @@ function pick(guess) {
 
   text.innerText = "You picked " + guess + ". Here are the random numbers:\n";
 }
+--fcc-editable-region--
 
 </script>
 ```
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-144.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-144.md
index 0b8e6e76c43..f427659c5ab 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-144.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-144.md
@@ -379,6 +379,7 @@ function pickEight() {
   pick(8);
 }
 
+--fcc-editable-region--
 function pick(guess) {
   let numbers = [];
   while(numbers.length < 10) {
@@ -391,6 +392,7 @@ function pick(guess) {
 
   }
 }
+--fcc-editable-region--
 
 </script>
 ```
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-145.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-145.md
index 26e18a7c56e..3268afb2fcc 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-145.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-145.md
@@ -377,6 +377,7 @@ function pickEight() {
   pick(8);
 }
 
+--fcc-editable-region--
 function pick(guess) {
   let numbers = [];
   while(numbers.length < 10) {
@@ -389,6 +390,7 @@ function pick(guess) {
 
   }
 }
+--fcc-editable-region--
 
 </script>
 ```
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-146.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-146.md
index 48e91cf293f..7b36211e6ac 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-146.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-146.md
@@ -377,6 +377,7 @@ function pickEight() {
   pick(8);
 }
 
+--fcc-editable-region--
 function pick(guess) {
   let numbers = [];
   while(numbers.length < 10) {
@@ -389,6 +390,7 @@ function pick(guess) {
 
   }
 }
+--fcc-editable-region--
 
 </script>
 ```
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-147.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-147.md
index 42649e01c7a..dd6d8a5d8d8 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-147.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-147.md
@@ -380,6 +380,7 @@ function pickEight() {
   pick(8);
 }
 
+--fcc-editable-region--
 function pick(guess) {
   let numbers = [];
   while(numbers.length < 10) {
@@ -392,6 +393,7 @@ function pick(guess) {
 
   }
 }
+--fcc-editable-region--
 
 </script>
 ```
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-148.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-148.md
index ef905ff4f7c..9497ccac3be 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-148.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-148.md
@@ -382,6 +382,7 @@ function pickEight() {
   pick(8);
 }
 
+--fcc-editable-region--
 function pick(guess) {
   let numbers = [];
   while(numbers.length < 10) {
@@ -394,6 +395,7 @@ function pick(guess) {
     text.innerText += numbers[i] + "\n";
   }
 }
+--fcc-editable-region--
 
 </script>
 ```
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-149.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-149.md
index 001a33b853c..587b02b9759 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-149.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-149.md
@@ -382,6 +382,7 @@ function pickEight() {
   pick(8);
 }
 
+--fcc-editable-region--
 function pick(guess) {
   let numbers = [];
   while(numbers.length < 10) {
@@ -398,6 +399,7 @@ function pick(guess) {
 
   }
 }
+--fcc-editable-region--
 
 </script>
 ```
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-150.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-150.md
index 4cbeb36e55e..57b19dde1ee 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-150.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-150.md
@@ -383,6 +383,7 @@ function pickEight() {
   pick(8);
 }
 
+--fcc-editable-region--
 function pick(guess) {
   let numbers = [];
   while(numbers.length < 10) {
@@ -401,6 +402,7 @@ function pick(guess) {
     goldText.innerText = gold;
   }
 }
+--fcc-editable-region--
 
 </script>
 ```
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-151.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-151.md
index 426f6020e2c..cf4e46bc6c2 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-151.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-151.md
@@ -382,6 +382,7 @@ function pickEight() {
   pick(8);
 }
 
+--fcc-editable-region--
 function pick(guess) {
   let numbers = [];
   while(numbers.length < 10) {
@@ -404,6 +405,7 @@ function pick(guess) {
     healthText.innerText = health;
   }
 }
+--fcc-editable-region--
 
 </script>
 ```
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-152.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-152.md
index dd5e0b96b45..ccd5e32b2b3 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-152.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-basic-javascript-by-building-a-role-playing-game/step-152.md
@@ -162,6 +162,7 @@ const monsters = [
   }
 ];
 
+--fcc-editable-region--
 const locations = [
   {
     name: "town square",
@@ -212,6 +213,7 @@ const locations = [
     text: "You find a secret game. Pick a number above. Ten numbers will be randomly chosen between 0 and 10. If the number you choose matches one of the random numbers, you win!"
   }
 ];
+--fcc-editable-region--
 
 // initialize buttons
 button1.onclick = goStore;
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-001.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-001.md
index 71481007a6e..a2ce162457c 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-001.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-001.md
@@ -85,7 +85,9 @@ assert(code.replace(/\s/g, '').match(/console\.log\(document\)/));
 
 ```html
 <script>
+--fcc-editable-region--
 
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-002.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-002.md
index 829b5294b79..aab244748d6 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-002.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-002.md
@@ -98,7 +98,9 @@ assert(
 
 ```html
 <script>
+--fcc-editable-region--
   //console.log(document);
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-003.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-003.md
index d8c5d7e9627..31afd7303fc 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-003.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-003.md
@@ -104,7 +104,9 @@ assert(
 
 ```html
 <script>
+--fcc-editable-region--
   document.getElementById('calorie-form');
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-004.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-004.md
index 6d11129b365..bcd3b1bc287 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-004.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-004.md
@@ -95,6 +95,9 @@ assert(typeof calculate === 'function');
 ```html
 <script>
   document.getElementById('calorie-form').onsubmit = calculate;
+--fcc-editable-region--
+
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-005.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-005.md
index efb61cfd3a3..8a02a67b570 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-005.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-005.md
@@ -96,9 +96,11 @@ assert(calculate.toString().match(/function calculate\(\s*e\)\s*\{\s*\}/));
 
 ```html
 <script>
+--fcc-editable-region--
   document.getElementById('calorie-form').onsubmit = calculate;
 
   function calculate() {}
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-006.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-006.md
index 3b2800d27d4..0cd5d1525fd 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-006.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-006.md
@@ -92,9 +92,11 @@ assert(calculate.toString().match(/e\.preventDefault\(\s*\)/));
 
 ```html
 <script>
+--fcc-editable-region--
   document.getElementById('calorie-form').onsubmit = calculate;
 
   function calculate(e) {}
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-007.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-007.md
index 6ad2f037d41..ee8e8356f0d 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-007.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-007.md
@@ -98,11 +98,13 @@ assert(
 
 ```html
 <script>
+--fcc-editable-region--
   document.getElementById('calorie-form').onsubmit = calculate;
 
   function calculate(e) {
     e.preventDefault();
   }
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-008.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-008.md
index c7cb8904d7c..9b80e0f827c 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-008.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-008.md
@@ -94,12 +94,14 @@ assert(
 
 ```html
 <script>
+--fcc-editable-region--
   document.getElementById('calorie-form').onsubmit = calculate;
 
   function calculate(e) {
     e.preventDefault();
     document.getElementsByClassName('cal-control');
   }
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-009.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-009.md
index 9bd31bd93bd..c5a2856f2c3 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-009.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-009.md
@@ -96,12 +96,14 @@ assert(
 
 ```html
 <script>
+--fcc-editable-region--
   document.getElementById('calorie-form').onsubmit = calculate;
 
   function calculate(e) {
     e.preventDefault();
     const total = document.getElementsByClassName('cal-control');
   }
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-010.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-010.md
index c89f460b152..40f6a846fd5 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-010.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-010.md
@@ -90,12 +90,14 @@ assert(/const\s*meal\s*=\s*total\[0\]/.test(code));
 
 ```html
 <script>
+--fcc-editable-region--
   document.getElementById('calorie-form').onsubmit = calculate;
 
   function calculate(e) {
     e.preventDefault();
     const total = Array.from(document.getElementsByClassName('cal-control'));
   }
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-011.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-011.md
index 37dbc37897d..725bff25987 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-011.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-011.md
@@ -90,6 +90,7 @@ See description above for instructions.
 
 ```html
 <script>
+--fcc-editable-region--
   document.getElementById('calorie-form').onsubmit = calculate;
 
   function calculate(e) {
@@ -97,6 +98,7 @@ See description above for instructions.
     const total = Array.from(document.getElementsByClassName('cal-control'));
     const meal = total[0];
   }
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-012.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-012.md
index 121329859bb..fead88a0598 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-012.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-012.md
@@ -101,6 +101,7 @@ assert(
 
 ```html
 <script>
+--fcc-editable-region--
   document.getElementById('calorie-form').onsubmit = calculate;
 
   function calculate(e) {
@@ -108,6 +109,7 @@ assert(
     const total = Array.from(document.getElementsByClassName('cal-control'));
     const meal = total[0];
   }
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-013.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-013.md
index efdd44e9cfb..714497fddbb 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-013.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-013.md
@@ -98,6 +98,7 @@ assert(code.replace(/\s/g, '').match(/map\(function\(\s*meal\)\{\}\)/));
 
 ```html
 <script>
+--fcc-editable-region--
   document.getElementById('calorie-form').onsubmit = calculate;
 
   function calculate(e) {
@@ -106,6 +107,7 @@ assert(code.replace(/\s/g, '').match(/map\(function\(\s*meal\)\{\}\)/));
       document.getElementsByClassName('cal-control')
     ).map();
   }
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-014.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-014.md
index 2b3ee38d6cd..7d58167b80c 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-014.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-014.md
@@ -94,6 +94,7 @@ assert(
 
 ```html
 <script>
+--fcc-editable-region--
   document.getElementById('calorie-form').onsubmit = calculate;
 
   function calculate(e) {
@@ -102,6 +103,7 @@ assert(
       document.getElementsByClassName('cal-control')
     ).map(function(meal) {});
   }
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-015.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-015.md
index 2604fe57619..4a199951818 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-015.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-015.md
@@ -90,6 +90,7 @@ assert(code.replace(/\s/g, '').match(/Number\(meal\.value\)\;?/));
 
 ```html
 <script>
+--fcc-editable-region--
   document.getElementById('calorie-form').onsubmit = calculate;
 
   function calculate(e) {
@@ -100,6 +101,7 @@ assert(code.replace(/\s/g, '').match(/Number\(meal\.value\)\;?/));
       return meal.value;
     });
   }
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-016.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-016.md
index 750c171fcda..6058cea614a 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-016.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-016.md
@@ -90,6 +90,7 @@ assert(code.replace(/\s/g, '').match(/meal\=\>Number\(meal\.value\)/));
 
 ```html
 <script>
+--fcc-editable-region--
   document.getElementById('calorie-form').onsubmit = calculate;
 
   function calculate(e) {
@@ -100,6 +101,7 @@ assert(code.replace(/\s/g, '').match(/meal\=\>Number\(meal\.value\)/));
       return Number(meal.value);
     });
   }
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-017.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-017.md
index 3609c4209bc..46dfade8b55 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-017.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-017.md
@@ -92,6 +92,7 @@ assert(code.replace(/\s/g, '').match(/Number\(meal\.value\)\)\.reduce\(\)/));
 
 ```html
 <script>
+--fcc-editable-region--
   document.getElementById('calorie-form').onsubmit = calculate;
 
   function calculate(e) {
@@ -101,6 +102,7 @@ assert(code.replace(/\s/g, '').match(/Number\(meal\.value\)\)\.reduce\(\)/));
       document.getElementsByClassName('cal-control')
     ).map(meal => Number(meal.value));
   }
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-018.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-018.md
index 56c0b676dcc..065b5dce513 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-018.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-018.md
@@ -106,6 +106,7 @@ assert(
 
 ```html
 <script>
+--fcc-editable-region--
   document.getElementById('calorie-form').onsubmit = calculate;
 
   function calculate(e) {
@@ -115,6 +116,7 @@ assert(
       .map(meal => Number(meal.value))
       .reduce();
   }
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-019.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-019.md
index 9e6d6d4851f..448c7702610 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-019.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-019.md
@@ -109,12 +109,14 @@ assert(
   function calculate(e) {
     e.preventDefault();
 
+--fcc-editable-region--
     const total = Array.from(document.getElementsByClassName('cal-control'))
       .map(meal => Number(meal.value))
       .reduce((accumulator, currentValue) => {
         /* code to run */
       });
   }
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-020.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-020.md
index cd007dc76be..4134f0401a2 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-020.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-020.md
@@ -117,12 +117,14 @@ assert(
   function calculate(e) {
     e.preventDefault();
 
+--fcc-editable-region--
     const total = Array.from(document.getElementsByClassName('cal-control'))
       .map(meal => Number(meal.value))
       .reduce((accumulator, currentValue) => {
         /* code to run */
       }, 0);
   }
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-021.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-021.md
index 2e47bc05830..c9d4f5bd8ad 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-021.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-021.md
@@ -96,6 +96,7 @@ assert(code.replace(/\s/g, '').match(/console.log\({accumulator}\)/));
 <script>
   document.getElementById('calorie-form').onsubmit = calculate;
 
+--fcc-editable-region--
   function calculate(e) {
     e.preventDefault();
 
@@ -108,6 +109,7 @@ assert(code.replace(/\s/g, '').match(/console.log\({accumulator}\)/));
 
     // log the value of `total` here
   }
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-022.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-022.md
index 59a97873d63..b36ed2d97b6 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-022.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-022.md
@@ -104,6 +104,7 @@ assert(
 <script>
   document.getElementById('calorie-form').onsubmit = calculate;
 
+--fcc-editable-region--
   function calculate(e) {
     e.preventDefault();
 
@@ -117,6 +118,7 @@ assert(
 
     //console.log({ total });
   }
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-023.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-023.md
index f4eb87288e7..8825fbe6dd0 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-023.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-023.md
@@ -102,6 +102,7 @@ assert(
 <script>
   document.getElementById('calorie-form').onsubmit = calculate;
 
+--fcc-editable-region--
   function calculate(e) {
     e.preventDefault();
 
@@ -109,6 +110,7 @@ assert(
       .map(meal => Number(meal.value))
       .reduce((accumulator, currentValue) => accumulator + currentValue, 0);
   }
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-024.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-024.md
index c79672514e1..1e19c715fcf 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-024.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-024.md
@@ -98,6 +98,7 @@ assert(
 <script>
   document.getElementById('calorie-form').onsubmit = calculate;
 
+--fcc-editable-region--
   function calculate(e) {
     e.preventDefault();
 
@@ -107,6 +108,7 @@ assert(
 
     const maxCalories = document.getElementById('female');
   }
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-025.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-025.md
index 31248302aff..21d83417535 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-025.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-025.md
@@ -108,6 +108,7 @@ assert(
 <script>
   document.getElementById('calorie-form').onsubmit = calculate;
 
+--fcc-editable-region--
   function calculate(e) {
     e.preventDefault();
 
@@ -117,6 +118,7 @@ assert(
 
     const maxCalories = document.getElementById('female').checked;
   }
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-026.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-026.md
index 10ff81437ab..abe960e3120 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-026.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-026.md
@@ -94,6 +94,7 @@ assert(/const\s*difference\s*\=\s*total\s*\-\s*maxCalories?/.test(code));
 <script>
   document.getElementById('calorie-form').onsubmit = calculate;
 
+--fcc-editable-region--
   function calculate(e) {
     e.preventDefault();
 
@@ -103,6 +104,7 @@ assert(/const\s*difference\s*\=\s*total\s*\-\s*maxCalories?/.test(code));
 
     const maxCalories = document.getElementById('female').checked ? 2000 : 2500;
   }
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-027.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-027.md
index 7d470ade534..ad3abc0bfe5 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-027.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-027.md
@@ -102,6 +102,7 @@ assert(
 <script>
   document.getElementById('calorie-form').onsubmit = calculate;
 
+--fcc-editable-region--
   function calculate(e) {
     e.preventDefault();
 
@@ -113,6 +114,7 @@ assert(
 
     const difference = total - maxCalories;
   }
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-028.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-028.md
index 77d9850849b..2dbdd8b547b 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-028.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-028.md
@@ -100,6 +100,7 @@ assert(
 <script>
   document.getElementById('calorie-form').onsubmit = calculate;
 
+--fcc-editable-region--
   function calculate(e) {
     e.preventDefault();
 
@@ -113,6 +114,7 @@ assert(
 
     const surplusOrDeficit = difference > 0 ? 'Surplus' : 'Deficit';
   }
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-029.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-029.md
index 53f518c0a59..87062f28e7f 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-029.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-029.md
@@ -104,6 +104,7 @@ assert(
 <script>
   document.getElementById('calorie-form').onsubmit = calculate;
 
+--fcc-editable-region--
   function calculate(e) {
     e.preventDefault();
 
@@ -119,6 +120,7 @@ assert(
 
     const output = document.getElementById('output');
   }
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-030.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-030.md
index 37b142ba761..90ad3c91cb4 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-030.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-030.md
@@ -104,6 +104,7 @@ assert(
 <script>
   document.getElementById('calorie-form').onsubmit = calculate;
 
+--fcc-editable-region--
   function calculate(e) {
     e.preventDefault();
 
@@ -121,6 +122,7 @@ assert(
 
     const result = document.createElement('h3');
   }
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-031.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-031.md
index 38e995e1433..b93248efe69 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-031.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-031.md
@@ -100,6 +100,7 @@ assert(
 <script>
   document.getElementById('calorie-form').onsubmit = calculate;
 
+--fcc-editable-region--
   function calculate(e) {
     e.preventDefault();
 
@@ -118,6 +119,7 @@ assert(
     const result = document.createElement('h3');
     const resultText = document.createTextNode();
   }
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-032.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-032.md
index 735e289f661..fd08248b5f0 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-032.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-032.md
@@ -100,6 +100,7 @@ assert(
 <script>
   document.getElementById('calorie-form').onsubmit = calculate;
 
+--fcc-editable-region--
   function calculate(e) {
     e.preventDefault();
 
@@ -118,6 +119,7 @@ assert(
     const result = document.createElement('h3');
     const resultText = document.createTextNode(difference);
   }
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-033.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-033.md
index 2a4ab5c38b4..f066a2b3607 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-033.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-033.md
@@ -96,6 +96,7 @@ assert(
 <script>
   document.getElementById('calorie-form').onsubmit = calculate;
 
+--fcc-editable-region--
   function calculate(e) {
     e.preventDefault();
 
@@ -114,6 +115,7 @@ assert(
     const result = document.createElement('h3');
     const resultText = document.createTextNode(Math.abs(difference));
   }
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-034.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-034.md
index 055a9757ab5..d2e8c9a31c3 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-034.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-034.md
@@ -98,6 +98,7 @@ assert(
 <script>
   document.getElementById('calorie-form').onsubmit = calculate;
 
+--fcc-editable-region--
   function calculate(e) {
     e.preventDefault();
 
@@ -118,6 +119,7 @@ assert(
       Math.abs(difference) + ' Calorie '
     );
   }
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-035.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-035.md
index da1e35be095..1311c2ac849 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-035.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-035.md
@@ -106,6 +106,7 @@ assert(
 <script>
   document.getElementById('calorie-form').onsubmit = calculate;
 
+--fcc-editable-region--
   function calculate(e) {
     e.preventDefault();
 
@@ -126,6 +127,7 @@ assert(
       Math.abs(difference) + ' Calorie ' + surplusOrDeficit
     );
   }
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-036.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-036.md
index 9ab54a78c02..923d7d02e23 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-036.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-036.md
@@ -96,6 +96,7 @@ assert(code.replace(/\s/g, '').match(/result\.appendChild\(resultText\)/));
 <script>
   document.getElementById('calorie-form').onsubmit = calculate;
 
+--fcc-editable-region--
   function calculate(e) {
     e.preventDefault();
 
@@ -116,6 +117,7 @@ assert(code.replace(/\s/g, '').match(/result\.appendChild\(resultText\)/));
       `${Math.abs(difference)} Calorie ${surplusOrDeficit}`
     );
   }
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-037.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-037.md
index 206bce04189..09da32b6cb5 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-037.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-037.md
@@ -94,6 +94,7 @@ assert(code.replace(/\s/g, '').match(/output\.appendChild\(result\)/));
 <script>
   document.getElementById('calorie-form').onsubmit = calculate;
 
+--fcc-editable-region--
   function calculate(e) {
     e.preventDefault();
 
@@ -116,6 +117,7 @@ assert(code.replace(/\s/g, '').match(/output\.appendChild\(result\)/));
 
     result.appendChild(resultText);
   }
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-038.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-038.md
index 7bdd64d9319..ccb8660bf13 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-038.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-038.md
@@ -96,6 +96,7 @@ assert(
 <script>
   document.getElementById('calorie-form').onsubmit = calculate;
 
+--fcc-editable-region--
   function calculate(e) {
     e.preventDefault();
 
@@ -119,6 +120,7 @@ assert(
     result.appendChild(resultText);
     output.appendChild(result);
   }
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-039.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-039.md
index 042fb45dd00..e0f9bd9c47c 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-039.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-039.md
@@ -92,6 +92,7 @@ assert(code.replace(/\s/g, '').match(/output\.appendChild\(line\)/));
 <script>
   document.getElementById('calorie-form').onsubmit = calculate;
 
+--fcc-editable-region--
   function calculate(e) {
     e.preventDefault();
 
@@ -117,6 +118,7 @@ assert(code.replace(/\s/g, '').match(/output\.appendChild\(line\)/));
     
     const line = document.createElement('hr');
   }
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-040.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-040.md
index c3988cf6379..4c4b069fb43 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-040.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-040.md
@@ -98,6 +98,7 @@ assert(
 <script>
   document.getElementById('calorie-form').onsubmit = calculate;
 
+--fcc-editable-region--
   function calculate(e) {
     e.preventDefault();
 
@@ -124,6 +125,7 @@ assert(
     const line = document.createElement('hr');
     output.appendChild(line);
   }
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-041.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-041.md
index 74120a2542e..0becd375fa5 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-041.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-041.md
@@ -98,6 +98,7 @@ assert(
 <script>
   document.getElementById('calorie-form').onsubmit = calculate;
 
+--fcc-editable-region--
   function calculate(e) {
     e.preventDefault();
 
@@ -126,6 +127,7 @@ assert(
 
     const recommended = document.createElement('h4');
   }
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-042.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-042.md
index defae2a104c..fd2d846ab52 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-042.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-042.md
@@ -100,6 +100,7 @@ assert(
 <script>
   document.getElementById('calorie-form').onsubmit = calculate;
 
+--fcc-editable-region--
   function calculate(e) {
     e.preventDefault();
 
@@ -129,6 +130,7 @@ assert(
     const recommended = document.createElement('h4');
     const recommendedText = document.createTextNode();
   }
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-043.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-043.md
index 8cc72ad1382..9e9d9c9c3f2 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-043.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-043.md
@@ -96,6 +96,7 @@ assert(
 <script>
   document.getElementById('calorie-form').onsubmit = calculate;
 
+--fcc-editable-region--
   function calculate(e) {
     e.preventDefault();
 
@@ -127,6 +128,7 @@ assert(
       `${maxCalories} Recommended Calories`
     );
   }
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-044.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-044.md
index 695206f70ef..9264e8ac9cf 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-044.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-044.md
@@ -92,6 +92,7 @@ assert(code.replace(/\s/g, '').match(/output\.appendChild\(recommended\)/));
 <script>
   document.getElementById('calorie-form').onsubmit = calculate;
 
+--fcc-editable-region--
   function calculate(e) {
     e.preventDefault();
 
@@ -125,6 +126,7 @@ assert(code.replace(/\s/g, '').match(/output\.appendChild\(recommended\)/));
 
     recommended.appendChild(recommendedText);
   }
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-045.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-045.md
index 862682f2aa0..0fd8978f093 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-045.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-045.md
@@ -98,6 +98,7 @@ assert(
 <script>
   document.getElementById('calorie-form').onsubmit = calculate;
 
+--fcc-editable-region--
   function calculate(e) {
     e.preventDefault();
 
@@ -132,6 +133,7 @@ assert(
     recommended.appendChild(recommendedText);
     output.appendChild(recommended);
   }
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-046.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-046.md
index 8be22ea25fc..6bb2536f422 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-046.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-046.md
@@ -104,6 +104,7 @@ assert(
 <script>
   document.getElementById('calorie-form').onsubmit = calculate;
 
+--fcc-editable-region--
   function calculate(e) {
     e.preventDefault();
 
@@ -140,6 +141,7 @@ assert(
 
     const consumed = document.createElement('h4');
   }
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-047.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-047.md
index 551b2c80ceb..29d043f4c6e 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-047.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-047.md
@@ -92,6 +92,7 @@ assert(code.replace(/\s/g, '').match(/output\.appendChild\(consumed\)/));
 <script>
   document.getElementById('calorie-form').onsubmit = calculate;
 
+--fcc-editable-region--
   function calculate(e) {
     e.preventDefault();
 
@@ -129,6 +130,7 @@ assert(code.replace(/\s/g, '').match(/output\.appendChild\(consumed\)/));
     const consumed = document.createElement('h4');
     consumed.innerHTML = `${total} Consumed Calories`;
   }
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-048.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-048.md
index 92df3992f2b..c34dcad8f68 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-048.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-048.md
@@ -115,11 +115,13 @@ assert(
 
     const output = document.getElementById('output');
 
+--fcc-editable-region--
     const result = document.createElement('h3');
     //put your code here
     const resultText = document.createTextNode(
       `${Math.abs(difference)} Calorie ${surplusOrDeficit}`
     );
+--fcc-editable-region--
 
     result.appendChild(resultText);
     output.appendChild(result);
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-049.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-049.md
index c439034ba39..7298971ffec 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-049.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-049.md
@@ -140,9 +140,11 @@ assert(
     const consumed = document.createElement('h4');
     consumed.innerHTML = `${total} Consumed Calories`;
     output.appendChild(consumed);
+--fcc-editable-region--
 
     //put your code here
   }
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-050.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-050.md
index 5710ffb5e2c..1b0bd348910 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-050.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-050.md
@@ -139,8 +139,11 @@ assert(
     consumed.innerHTML = `${total} Consumed Calories`;
     output.appendChild(consumed);
 
+--fcc-editable-region--
     output.setAttribute('class', 'bordered-class');
+    
   }
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-051.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-051.md
index bfb98704318..56bbb142804 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-051.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-051.md
@@ -145,7 +145,10 @@ assert(
 
     output.setAttribute('class', 'bordered-class');
     output.style.backgroundColor = '#FFF9C4';
+--fcc-editable-region--
+
   }
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-052.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-052.md
index fe53111575d..db8f9bc95c1 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-052.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-052.md
@@ -147,7 +147,9 @@ assert(
     output.style.backgroundColor = '#FFF9C4';
   }
 
+--fcc-editable-region--
   document.getElementById('add');
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-053.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-053.md
index 689313a6afb..886f041422c 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-053.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-053.md
@@ -141,7 +141,9 @@ assert(
     output.style.backgroundColor = '#FFF9C4';
   }
 
+--fcc-editable-region--
   document.getElementById('add').onclick = function() {};
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-054.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-054.md
index f00b4000342..6860d68731d 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-054.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-054.md
@@ -139,9 +139,11 @@ assert(
     output.style.backgroundColor = '#FFF9C4';
   }
 
+--fcc-editable-region--
   document.getElementById('add').onclick = function() {
     const foodInput = document.createElement('input');
   };
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-055.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-055.md
index 15b3b5dcd19..89e37a9f626 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-055.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-055.md
@@ -143,10 +143,12 @@ assert(
     output.style.backgroundColor = '#FFF9C4';
   }
 
+--fcc-editable-region--
   document.getElementById('add').onclick = function() {
     const foodInput = document.createElement('input');
     foodInput.placeholder = 'food name';
   };
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-056.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-056.md
index c4c8cd13d49..e0ab30e27b5 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-056.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-056.md
@@ -145,11 +145,13 @@ assert(
     output.style.backgroundColor = '#FFF9C4';
   }
 
+--fcc-editable-region--
   document.getElementById('add').onclick = function() {
     const foodInput = document.createElement('input');
     foodInput.placeholder = 'food name';
     foodInput.classList.add('food-control');
   };
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-057.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-057.md
index 4df1508a420..ea1faf6c59c 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-057.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-057.md
@@ -139,12 +139,14 @@ assert(
     output.style.backgroundColor = '#FFF9C4';
   }
 
+--fcc-editable-region--
   document.getElementById('add').onclick = function() {
     const foodInput = document.createElement('input');
     foodInput.placeholder = 'food name';
     foodInput.classList.add('food-control');
     document.getElementById('entries').appendChild(foodInput);
   };
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-058.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-058.md
index 4e6d068b417..594af428356 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-058.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-058.md
@@ -143,6 +143,7 @@ assert(
     output.style.backgroundColor = '#FFF9C4';
   }
 
+--fcc-editable-region--
   document.getElementById('add').onclick = function() {
     const foodInput = document.createElement('input');
     foodInput.placeholder = 'food name';
@@ -151,6 +152,7 @@ assert(
 
     const calorieInput = document.createElement('input');
   };
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-059.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-059.md
index 5f1f6efc972..962a0309894 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-059.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-059.md
@@ -143,6 +143,7 @@ assert(
     output.style.backgroundColor = '#FFF9C4';
   }
 
+--fcc-editable-region--
   document.getElementById('add').onclick = function() {
     const foodInput = document.createElement('input');
     foodInput.placeholder = 'food name';
@@ -152,6 +153,7 @@ assert(
     const calorieInput = document.createElement('input');
     calorieInput.setAttribute('type', 'number');
   };
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-060.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-060.md
index f82cc26281d..eac60b49fce 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-060.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-060.md
@@ -141,6 +141,7 @@ assert(
     output.style.backgroundColor = '#FFF9C4';
   }
 
+--fcc-editable-region--
   document.getElementById('add').onclick = function() {
     const foodInput = document.createElement('input');
     foodInput.placeholder = 'food name';
@@ -151,6 +152,7 @@ assert(
     calorieInput.setAttribute('type', 'number');
     calorieInput.setAttribute('min', '0');
   };
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-061.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-061.md
index 20ea10cc1aa..7ffb7021744 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-061.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-061.md
@@ -141,6 +141,7 @@ assert(
     output.style.backgroundColor = '#FFF9C4';
   }
 
+--fcc-editable-region--
   document.getElementById('add').onclick = function() {
     const foodInput = document.createElement('input');
     foodInput.placeholder = 'food name';
@@ -152,6 +153,7 @@ assert(
     calorieInput.setAttribute('min', '0');
     calorieInput.classList.add('cal-control');
   };
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-062.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-062.md
index 9b031fff985..8e15285d2a9 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-062.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-062.md
@@ -143,6 +143,7 @@ assert(
     output.style.backgroundColor = '#FFF9C4';
   }
 
+--fcc-editable-region--
   document.getElementById('add').onclick = function() {
     const foodInput = document.createElement('input');
     foodInput.placeholder = 'food name';
@@ -155,6 +156,7 @@ assert(
     calorieInput.classList.add('cal-control');
     calorieInput.classList.add('extra-cal-control');
   };
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-063.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-063.md
index 46cc91e229d..df36314c4ae 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-063.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-063.md
@@ -156,6 +156,9 @@ assert(
     calorieInput.classList.add('extra-cal-control');
     document.getElementById('entries').appendChild(calorieInput);
   };
+--fcc-editable-region--
+
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-064.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-064.md
index f2a7d9b06bd..1e5b3e9b048 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-064.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-064.md
@@ -149,7 +149,9 @@ assert(/clearOutput\(\)/.test(code) && /clearForm\(\)/.test(code));
     document.getElementById('entries').appendChild(calorieInput);
   };
 
+--fcc-editable-region--
   document.getElementById('clear').onclick = function() {};
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-065.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-065.md
index 04728fc4ce2..7a941b6559c 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-065.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-065.md
@@ -159,6 +159,9 @@ assert(typeof clearOutput === 'function');
     clearOutput();
     clearForm();
   };
+--fcc-editable-region--
+
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-066.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-066.md
index e89ca958cc5..e6a2d2c6337 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-066.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-066.md
@@ -162,7 +162,9 @@ assert(
     clearForm();
   };
 
+--fcc-editable-region--
   const clearOutput = () => {};
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-067.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-067.md
index 2f67c780e6f..f8984120835 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-067.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-067.md
@@ -166,9 +166,11 @@ assert(
     clearForm();
   };
 
+--fcc-editable-region--
   const clearOutput = () => {
     document.getElementById('output').innerHTML = '';
   };
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-068.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-068.md
index 3723c6e0ad0..93a258c395b 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-068.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-068.md
@@ -94,10 +94,12 @@ assert(calculate.toString().match(/clearOutput\(\)/));
 <script>
   document.getElementById('calorie-form').onsubmit = calculate;
 
+--fcc-editable-region--
   function calculate(e) {
     e.preventDefault();
     //put your code here
 
+--fcc-editable-region--
     const total = Array.from(document.getElementsByClassName('cal-control'))
       .map(meal => Number(meal.value))
       .reduce((accumulator, currentValue) => accumulator + currentValue, 0);
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-069.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-069.md
index 93c715f2366..6a07e9aa83b 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-069.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-069.md
@@ -159,6 +159,9 @@ assert(typeof clearForm === 'function');
     document.getElementById('output').innerHTML = '';
     document.getElementById('output').classList.remove('bordered-class');
   };
+--fcc-editable-region--
+
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-070.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-070.md
index bd56e1a74a2..88284a00280 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-070.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-070.md
@@ -170,7 +170,9 @@ assert(
     document.getElementById('output').classList.remove('bordered-class');
   };
 
+--fcc-editable-region--
   const clearForm = () => {};
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-071.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-071.md
index 5b33a7f2e42..9cc201d5194 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-071.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-071.md
@@ -162,11 +162,13 @@ assert(code.replace(/\s/g, '').match(/foodInputs.forEach\(\)/));
     document.getElementById('output').classList.remove('bordered-class');
   };
 
+--fcc-editable-region--
   const clearForm = () => {
     const foodInputs = Array.from(
       document.getElementsByClassName('food-control')
     );
   };
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-072.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-072.md
index fc210a22302..8044dac1e60 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-072.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-072.md
@@ -166,6 +166,7 @@ assert(
     document.getElementById('output').classList.remove('bordered-class');
   };
 
+--fcc-editable-region--
   const clearForm = () => {
     const foodInputs = Array.from(
       document.getElementsByClassName('food-control')
@@ -173,6 +174,7 @@ assert(
 
     foodInputs.forEach();
   };
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-073.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-073.md
index 8ff380812d7..dd34b193b4c 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-073.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-073.md
@@ -170,6 +170,7 @@ assert(
     document.getElementById('output').classList.remove('bordered-class');
   };
 
+--fcc-editable-region--
   const clearForm = () => {
     const foodInputs = Array.from(
       document.getElementsByClassName('food-control')
@@ -177,6 +178,7 @@ assert(
 
     foodInputs.forEach(input => input.remove());
   };
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-074.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-074.md
index 720d9d76e08..652c8f99281 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-074.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-074.md
@@ -169,10 +169,12 @@ assert(
 
     foodInputs.forEach(input => input.remove());
 
+--fcc-editable-region--
     const calInputs = Array.from(
       document.getElementsByClassName('extra-cal-control')
     );
   };
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-075.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-075.md
index f544948b1b7..b3cf00545fa 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-075.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-form-validation-by-building-a-calorie-counter/step-075.md
@@ -176,9 +176,11 @@ assert(
     const calInputs = Array.from(
       document.getElementsByClassName('extra-cal-control')
     );
+--fcc-editable-region--
 
     calInputs.forEach(input => input.remove());
   };
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-001.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-001.md
index ffd55741e80..08bc2a4aa43 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-001.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-001.md
@@ -62,8 +62,10 @@ assert(code.replace(/\s/g, '').includes('constinfixToFunction={}'));
 
 ```html
 <script>
+--fcc-editable-region--
 
 
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-002.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-002.md
index b47354b1dec..3159f1d2410 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-002.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-002.md
@@ -58,7 +58,9 @@ assert(code.replace(/\s/g, '').includes('functionadd(x,y){}'));
 
 ```html
 <script>
+--fcc-editable-region--
 
+--fcc-editable-region--
 const infixToFunction = {};
 
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-003.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-003.md
index 0cfa0965944..c5dbbab705c 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-003.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-003.md
@@ -59,9 +59,11 @@ assert(add(1, 2) === 3 && add(100, 2000) === 2100);
 ```html
 <script>
 
+--fcc-editable-region--
 function add(x, y) {
 
 }
+--fcc-editable-region--
 
 const infixToFunction = {};
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-004.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-004.md
index 731f9c76f15..0a9d327d798 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-004.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-004.md
@@ -64,7 +64,9 @@ assert(code.replace(/\s/g, '').includes('constaddVar=add'));
 function add(x, y) {
   return x + y;
 }
+--fcc-editable-region--
 
+--fcc-editable-region--
 const infixToFunction = {};
 
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-005.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-005.md
index 1bf015919c9..4e85d64fbe2 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-005.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-005.md
@@ -71,7 +71,9 @@ function add(x, y) {
   return x + y;
 }
 
+--fcc-editable-region--
 const addVar = add;
+--fcc-editable-region--
 
 const infixToFunction = {};
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-006.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-006.md
index 62b45451244..a9aa387addd 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-006.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-006.md
@@ -69,9 +69,11 @@ assert(code.replace(/\s/g, '').includes('constaddVar=function(x,y){returnx+y'));
 ```html
 <script>
 
+--fcc-editable-region--
 function add(x, y) {
   return x + y;
 }
+--fcc-editable-region--
 
 const infixToFunction = {};
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-007.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-007.md
index 25ffd362fd7..68c44b16619 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-007.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-007.md
@@ -67,9 +67,11 @@ assert(code.replace(/\s/g, '').includes('constaddVar=(x,y)=>x+y'));
 ```html
 <script>
 
+--fcc-editable-region--
 const addVar = function(x, y) {
   return x + y;
 };
+--fcc-editable-region--
 
 const infixToFunction = {};
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-008.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-008.md
index 2e0caf85bbe..676f6c6f4ff 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-008.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-008.md
@@ -61,7 +61,9 @@ assert(infixToFunction['+'].toString() === addVar.toString());
 
 const addVar = (x, y) => x + y;
 
+--fcc-editable-region--
 const infixToFunction = {};
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-009.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-009.md
index 53cf0d29cf9..c44846417a5 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-009.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-009.md
@@ -61,9 +61,11 @@ assert(code.replace(/\s/g, '').match(/\+["']:\(x,y\)=>x\+y/));
 
 const addVar = (x, y) => x + y;
 
+--fcc-editable-region--
 const infixToFunction = {
   "+": addVar
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-010.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-010.md
index 40fb1888718..2096072d738 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-010.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-010.md
@@ -59,7 +59,9 @@ assert(typeof addVar === 'undefined');
 ```html
 <script>
 
+--fcc-editable-region--
 const addVar = (x, y) => x + y;
+--fcc-editable-region--
 
 const infixToFunction = {
   "+": (x, y) => x + y
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-011.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-011.md
index cd9ba50e3fd..526e706eb08 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-011.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-011.md
@@ -63,9 +63,11 @@ assert(
 ```html
 <script>
 
+--fcc-editable-region--
 const infixToFunction = {
   "+": (x, y) => x + y
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-012.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-012.md
index 14f83e7b6ce..37432637ac6 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-012.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-012.md
@@ -70,7 +70,9 @@ const infixToFunction = {
   "/": (x, y) => x / y
 };
 
+--fcc-editable-region--
 
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-013.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-013.md
index 0da0feb5386..3d09b3967f2 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-013.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-013.md
@@ -74,7 +74,9 @@ const infixToFunction = {
   "/": (x, y) => x / y
 };
 
+--fcc-editable-region--
 const infixEval = (str, regex) => str.replace(regex, "");
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-014.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-014.md
index ca1c93273c1..0926459ef14 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-014.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-014.md
@@ -70,7 +70,9 @@ const infixToFunction = {
   "/": (x, y) => x / y
 };
 
+--fcc-editable-region--
 const infixEval = (str, regex) => str.replace(regex, infixToFunction["+"]);
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-015.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-015.md
index 98e9e74f2ba..23968d2e070 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-015.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-015.md
@@ -72,10 +72,12 @@ const infixToFunction = {
   "/": (x, y) => x / y
 };
 
+--fcc-editable-region--
 const infixEval = (str, regex) =>
   str.replace(regex, (match, arg1, fn, arg2) =>
     infixToFunction["+"]
   );
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-016.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-016.md
index d96b6a2d9bf..f3dd1211e6a 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-016.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-016.md
@@ -74,10 +74,12 @@ const infixToFunction = {
   "/": (x, y) => x / y
 };
 
+--fcc-editable-region--
 const infixEval = (str, regex) =>
   str.replace(regex, (match, arg1, fn, arg2) =>
     infixToFunction[fn]
   );
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-017.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-017.md
index bb7bfb098bf..e295114e777 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-017.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-017.md
@@ -70,10 +70,12 @@ const infixToFunction = {
   "/": (x, y) => x / y
 };
 
+--fcc-editable-region--
 const infixEval = (str, regex) =>
   str.replace(regex, (match, arg1, fn, arg2) =>
     infixToFunction[fn](parseFloat(arg1), parseFloat(arg2))
   );
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-018.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-018.md
index 0b5eeae3de8..1af15a10b8e 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-018.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-018.md
@@ -77,7 +77,9 @@ const infixEval = (str, regex) =>
     infixToFunction[fn](parseFloat(arg1), parseFloat(arg2))
   );
 
+--fcc-editable-region--
 
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-019.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-019.md
index c66eaf246d0..5c2d8560932 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-019.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-019.md
@@ -79,7 +79,9 @@ const infixEval = (str, regex) =>
   str.replace(regex, (_, arg1, fn, arg2) =>
     infixToFunction[fn](parseFloat(arg1), parseFloat(arg2)));
 
+--fcc-editable-region--
 const highPrecedence = str => str;
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-020.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-020.md
index 8ba07d3a779..1ddd40ce5d8 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-020.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-020.md
@@ -71,9 +71,11 @@ const infixEval = (str, regex) =>
     infixToFunction[fn](parseFloat(arg1), parseFloat(arg2))
   );
 
+--fcc-editable-region--
 const highPrecedence = str => {
   return str;
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-021.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-021.md
index fdcf69e7ef8..3bfba3454a9 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-021.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-021.md
@@ -71,10 +71,12 @@ const infixEval = (str, regex) =>
     infixToFunction[fn](parseFloat(arg1), parseFloat(arg2))
   );
 
+--fcc-editable-region--
 const highPrecedence = str => {
   const regex = /([0-9.]+)([*\/])([0-9.]+)/;
   return str;
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-022.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-022.md
index a1b5ab7037c..333b8bcb122 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-022.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-022.md
@@ -83,11 +83,13 @@ const infixEval = (str, regex) =>
     infixToFunction[fn](parseFloat(arg1), parseFloat(arg2))
   );
 
+--fcc-editable-region--
 const highPrecedence = str => {
   const regex = /([0-9.]+)([*\/])([0-9.]+)/;
   const str2 = infixEval(str, regex);
   return str2;
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-023.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-023.md
index 1692c3fe034..c5f666b8a05 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-023.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-023.md
@@ -77,11 +77,13 @@ const infixEval = (str, regex) =>
     infixToFunction[fn](parseFloat(arg1), parseFloat(arg2))
   );
 
+--fcc-editable-region--
 const highPrecedence = str => {
   const regex = /([0-9.]+)([*\/])([0-9.]+)/;
   const str2 = infixEval(str, regex);
   return str === str2 ? str : "";
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-024.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-024.md
index 052946797d1..c837d8e94e1 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-024.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-024.md
@@ -77,7 +77,9 @@ const highPrecedence = str => {
   return str === str2 ? str : highPrecedence(str2);
 };
 
+--fcc-editable-region--
 
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-025.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-025.md
index 872da7e5967..58109dce7a4 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-025.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-025.md
@@ -81,7 +81,9 @@ const spreadsheetFunctions = {
   "": x => x
 };
 
+--fcc-editable-region--
 
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-026.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-026.md
index ed92a288199..313db4427d6 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-026.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-026.md
@@ -85,9 +85,11 @@ const spreadsheetFunctions = {
   "": x => x
 };
 
+--fcc-editable-region--
 const applyFn = str => {
 
 }
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-027.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-027.md
index db4e0001ae3..bc94c78c155 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-027.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-027.md
@@ -87,9 +87,11 @@ const spreadsheetFunctions = {
   "": x => x
 };
 
+--fcc-editable-region--
 const applyFn = str => {
   const noHigh = highPrecedence(str);
 }
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-028.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-028.md
index 6bb77acacc6..7972802a8b8 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-028.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-028.md
@@ -87,10 +87,12 @@ const spreadsheetFunctions = {
   "": x => x
 };
 
+--fcc-editable-region--
 const applyFn = str => {
   const noHigh = highPrecedence(str);
   const infix = /([0-9.]+)([+-])([0-9.]+)/;
 }
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-029.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-029.md
index 3b99b32278f..f957c47d628 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-029.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-029.md
@@ -86,11 +86,13 @@ const spreadsheetFunctions = {
   "": x => x
 };
 
+--fcc-editable-region--
 const applyFn = str => {
   const noHigh = highPrecedence(str);
   const infix = /([0-9.]+)([+-])([0-9.]+)/;
   const str2 = infixEval(noHigh, infix);
 }
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-030.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-030.md
index fa189f8f584..42b80301fc6 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-030.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-030.md
@@ -87,12 +87,14 @@ const spreadsheetFunctions = {
   "": x => x
 };
 
+--fcc-editable-region--
 const applyFn = str => {
   const noHigh = highPrecedence(str);
   const infix = /([0-9.]+)([+-])([0-9.]+)/;
   const str2 = infixEval(noHigh, infix);
   const regex = /([a-z]*)\(([0-9., ]*)\)(?!.*\()/i;
 }
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-031.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-031.md
index 107b32385aa..33e85a097cc 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-031.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-031.md
@@ -91,6 +91,7 @@ const spreadsheetFunctions = {
   "": x => x
 };
 
+--fcc-editable-region--
 const applyFn = str => {
   const noHigh = highPrecedence(str);
   const infix = /([0-9.]+)([+-])([0-9.]+)/;
@@ -98,6 +99,7 @@ const applyFn = str => {
   const regex = /([a-z]*)\(([0-9., ]*)\)(?!.*\()/i;
   const toNumberList = args => args.split(",");
 }
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-032.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-032.md
index 05b92686519..abb91060f5e 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-032.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-032.md
@@ -87,6 +87,7 @@ const spreadsheetFunctions = {
   "": x => x
 };
 
+--fcc-editable-region--
 const applyFn = str => {
   const noHigh = highPrecedence(str);
   const infix = /([0-9.]+)([+-])([0-9.]+)/;
@@ -94,6 +95,7 @@ const applyFn = str => {
   const regex = /([a-z]*)\(([0-9., ]*)\)(?!.*\()/i;
   const toNumberList = args => args.split(",").map(parseFloat);
 }
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-033.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-033.md
index 1bdfaa22af5..bb2f8da03a5 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-033.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-033.md
@@ -87,6 +87,7 @@ const spreadsheetFunctions = {
   "": x => x
 };
 
+--fcc-editable-region--
 const applyFn = str => {
   const noHigh = highPrecedence(str);
   const infix = /([0-9.]+)([+-])([0-9.]+)/;
@@ -95,6 +96,7 @@ const applyFn = str => {
   const toNumberList = args => args.split(",").map(parseFloat);
   const applyFunction = (fn, args) => spreadsheetFunctions;
 }
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-034.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-034.md
index 651c4641a95..f32c582d3ef 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-034.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-034.md
@@ -87,6 +87,7 @@ const spreadsheetFunctions = {
   "": x => x
 };
 
+--fcc-editable-region--
 const applyFn = str => {
   const noHigh = highPrecedence(str);
   const infix = /([0-9.]+)([+-])([0-9.]+)/;
@@ -95,6 +96,7 @@ const applyFn = str => {
   const toNumberList = args => args.split(",").map(parseFloat);
   const applyFunction = (fn, args) => spreadsheetFunctions[fn.toLowerCase()];
 }
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-035.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-035.md
index 52041a73536..a460b595da1 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-035.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-035.md
@@ -83,6 +83,7 @@ const spreadsheetFunctions = {
   "": x => x
 };
 
+--fcc-editable-region--
 const applyFn = str => {
   const noHigh = highPrecedence(str);
   const infix = /([0-9.]+)([+-])([0-9.]+)/;
@@ -92,6 +93,7 @@ const applyFn = str => {
   const applyFunction = (fn, args) =>
     spreadsheetFunctions[fn.toLowerCase()](toNumberList(args));
 }
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-036.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-036.md
index 69bdad89bb2..45e848ecbeb 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-036.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-036.md
@@ -85,6 +85,7 @@ const spreadsheetFunctions = {
   "": x => x
 };
 
+--fcc-editable-region--
 const applyFn = str => {
   const noHigh = highPrecedence(str);
   const infix = /([0-9.]+)([+-])([0-9.]+)/;
@@ -95,6 +96,7 @@ const applyFn = str => {
     spreadsheetFunctions[fn.toLowerCase()](toNumberList(args));
   return str2.replace(regex, "");
 }
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-037.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-037.md
index a03de8d5a50..7394c7c6472 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-037.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-037.md
@@ -89,6 +89,7 @@ const spreadsheetFunctions = {
   "": x => x
 };
 
+--fcc-editable-region--
 const applyFn = str => {
   const noHigh = highPrecedence(str);
   const infix = /([0-9.]+)([+-])([0-9.]+)/;
@@ -99,6 +100,7 @@ const applyFn = str => {
     spreadsheetFunctions[fn.toLowerCase()](toNumberList(args));
   return str2.replace(regex, (match, fn, args) => spreadsheetFunctions);
 }
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-038.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-038.md
index 0c8a1d7a02e..c86fe809104 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-038.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-038.md
@@ -81,6 +81,7 @@ const spreadsheetFunctions = {
   "": x => x
 };
 
+--fcc-editable-region--
 const applyFn = str => {
   const noHigh = highPrecedence(str);
   const infix = /([0-9.]+)([+-])([0-9.]+)/;
@@ -95,6 +96,7 @@ const applyFn = str => {
       spreadsheetFunctions.hasOwnProperty(fn.toLowerCase())
   );
 }
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-039.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-039.md
index b21e077c60c..bfa91d4503f 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-039.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-039.md
@@ -96,7 +96,9 @@ const applyFn = str => {
   );
 };
 
+--fcc-editable-region--
 
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-040.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-040.md
index ccfc587e5fd..24d94216931 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-040.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-040.md
@@ -99,9 +99,11 @@ const applyFn = str => {
   );
 };
 
+--fcc-editable-region--
 const range = (start, end) => {
 
 }
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-041.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-041.md
index 09bb2e5d379..4307ef2889a 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-041.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-041.md
@@ -96,10 +96,12 @@ const applyFn = str => {
   );
 };
 
+--fcc-editable-region--
 const range = (start, end) => {
   const arr = [start];
   return arr;
 }
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-042.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-042.md
index d086d56e696..0fa8e6fe0fb 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-042.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-042.md
@@ -109,11 +109,13 @@ const applyFn = str => {
   );
 };
 
+--fcc-editable-region--
 const range = (start, end) => {
   const arr = [start];
   arr.push(end);
   return arr;
 }
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-043.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-043.md
index 49bfe428ac2..448578598f5 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-043.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-043.md
@@ -103,10 +103,12 @@ const applyFn = str => {
   );
 };
 
+--fcc-editable-region--
 const range = (start, end) => {
   const arr = [start];
   return arr.concat(end);
 }
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-044.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-044.md
index 31a88c59e4f..6e89d44a236 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-044.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-044.md
@@ -99,10 +99,12 @@ const applyFn = str => {
   );
 };
 
+--fcc-editable-region--
 const range = (start, end) => {
   const arr = [start];
   return arr.concat([end]);
 }
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-045.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-045.md
index 20613db9d17..0d876da26b6 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-045.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-045.md
@@ -99,9 +99,11 @@ const applyFn = str => {
   );
 };
 
+--fcc-editable-region--
 const range = (start, end) => {
   return [start].concat([end]);
 }
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-046.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-046.md
index c384f5ca0f6..ee94e71d4a4 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-046.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-046.md
@@ -96,9 +96,11 @@ const applyFn = str => {
   );
 };
 
+--fcc-editable-region--
 const range = (start, end) => {
   return start > end ? [] : [start].concat([end]);
 }
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-047.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-047.md
index 752367617d2..497b63c634b 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-047.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-047.md
@@ -102,9 +102,11 @@ const applyFn = str => {
   );
 };
 
+--fcc-editable-region--
 const range = (start, end) => {
   return start > end ? [] : [start].concat(range(start + 1, end));
 }
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-048.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-048.md
index bf876bd1959..862a0002f2f 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-048.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-048.md
@@ -99,7 +99,9 @@ const applyFn = str => {
 const range = (start, end) =>
   start > end ? [] : [start].concat(range(start + 1, end));
 
+--fcc-editable-region--
 
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-049.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-049.md
index c735a41df3b..9845839bbeb 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-049.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-049.md
@@ -99,7 +99,9 @@ const applyFn = str => {
 const range = (start, end) =>
   start > end ? [] : [start].concat(range(start + 1, end));
 
+--fcc-editable-region--
 const charRange = (start, end) => start;
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-050.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-050.md
index 8b84baf135b..43167394a7b 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-050.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-050.md
@@ -99,7 +99,9 @@ const applyFn = str => {
 const range = (start, end) =>
   start > end ? [] : [start].concat(range(start + 1, end));
 
+--fcc-editable-region--
 const charRange = (start, end) => range(start, end);
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-051.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-051.md
index 8cb76cd848c..f5bb024255e 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-051.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-051.md
@@ -103,7 +103,9 @@ const applyFn = str => {
 const range = (start, end) =>
   start > end ? [] : [start].concat(range(start + 1, end));
 
+--fcc-editable-region--
 const charRange = (start, end) => range(start.charCodeAt(0), end.charCodeAt(0));
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-052.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-052.md
index 517026af414..8369854b752 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-052.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-052.md
@@ -99,7 +99,9 @@ const applyFn = str => {
 const range = (start, end) =>
   start > end ? [] : [start].concat(range(start + 1, end));
 
+--fcc-editable-region--
 const charRange = (start, end) => range(start.charCodeAt(0), end.charCodeAt(0)).map(x => x);
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-053.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-053.md
index d7378d0072a..6253e20d545 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-053.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-053.md
@@ -110,7 +110,9 @@ const charRange = (start, end) =>
     String.fromCharCode(x)
   );
 
+--fcc-editable-region--
 
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-054.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-054.md
index 6eebcffd5f0..03ceaf96068 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-054.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-054.md
@@ -108,10 +108,12 @@ const charRange = (start, end) =>
     String.fromCharCode(x)
   );
 
+--fcc-editable-region--
 const evalFormula = x => {
   const rangeRegex = /([A-J])([1-9][0-9]?):([A-J])([1-9][0-9]?)/gi;
 
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-055.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-055.md
index 158a2274a31..27b4b66f7f2 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-055.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-055.md
@@ -108,10 +108,12 @@ const charRange = (start, end) =>
     String.fromCharCode(x)
   );
 
+--fcc-editable-region--
 const evalFormula = x => {
   const rangeRegex = /([A-J])([1-9][0-9]?):([A-J])([1-9][0-9]?)/gi;
   const rangeFromString = (n1, n2) => n1;
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-056.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-056.md
index 473a93c34fa..72223dddb2c 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-056.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-056.md
@@ -108,10 +108,12 @@ const charRange = (start, end) =>
     String.fromCharCode(x)
   );
 
+--fcc-editable-region--
 const evalFormula = x => {
   const rangeRegex = /([A-J])([1-9][0-9]?):([A-J])([1-9][0-9]?)/gi;
   const rangeFromString = (n1, n2) => range(n1, n2);
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-057.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-057.md
index af791b45fca..1870ab8b951 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-057.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-057.md
@@ -106,10 +106,12 @@ const charRange = (start, end) =>
     String.fromCharCode(x)
   );
 
+--fcc-editable-region--
 const evalFormula = x => {
   const rangeRegex = /([A-J])([1-9][0-9]?):([A-J])([1-9][0-9]?)/gi;
   const rangeFromString = (n1, n2) => range(parseInt(n1), parseInt(n2));
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-058.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-058.md
index ca5d12eae97..b394d603ed4 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-058.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-058.md
@@ -108,6 +108,7 @@ const charRange = (start, end) =>
     String.fromCharCode(x)
   );
 
+--fcc-editable-region--
 const evalFormula = x => {
   const rangeRegex = /([A-J])([1-9][0-9]?):([A-J])([1-9][0-9]?)/gi;
   const rangeFromString = (n1, n2) => range(parseInt(n1), parseInt(n2));
@@ -115,6 +116,7 @@ const evalFormula = x => {
     return n;
   };
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-059.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-059.md
index a6d28884b15..e79d2b6f857 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-059.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-059.md
@@ -106,6 +106,7 @@ const charRange = (start, end) =>
     String.fromCharCode(x)
   );
 
+--fcc-editable-region--
 const evalFormula = x => {
   const rangeRegex = /([A-J])([1-9][0-9]?):([A-J])([1-9][0-9]?)/gi;
   const rangeFromString = (n1, n2) => range(parseInt(n1), parseInt(n2));
@@ -114,6 +115,7 @@ const evalFormula = x => {
     return fn;
   };
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-060.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-060.md
index 9241625b178..3d6a5a955b7 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-060.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-060.md
@@ -108,6 +108,7 @@ const charRange = (start, end) =>
     String.fromCharCode(x)
   );
 
+--fcc-editable-region--
 const evalFormula = x => {
   const rangeRegex = /([A-J])([1-9][0-9]?):([A-J])([1-9][0-9]?)/gi;
   const rangeFromString = (n1, n2) => range(parseInt(n1), parseInt(n2));
@@ -117,6 +118,7 @@ const evalFormula = x => {
   };
   const fn = elemValue("1");
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-061.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-061.md
index ebe10aa851c..994e931f57f 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-061.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-061.md
@@ -110,6 +110,7 @@ const charRange = (start, end) =>
     String.fromCharCode(x)
   );
 
+--fcc-editable-region--
 const evalFormula = x => {
   const rangeRegex = /([A-J])([1-9][0-9]?):([A-J])([1-9][0-9]?)/gi;
   const rangeFromString = (n1, n2) => range(parseInt(n1), parseInt(n2));
@@ -120,6 +121,7 @@ const evalFormula = x => {
   const fn = elemValue("1");
   return fn("A");
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-062.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-062.md
index b9dfb010cd5..b06f86f5495 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-062.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-062.md
@@ -108,6 +108,7 @@ const charRange = (start, end) =>
     String.fromCharCode(x)
   );
 
+--fcc-editable-region--
 const evalFormula = x => {
   const rangeRegex = /([A-J])([1-9][0-9]?):([A-J])([1-9][0-9]?)/gi;
   const rangeFromString = (n1, n2) => range(parseInt(n1), parseInt(n2));
@@ -117,6 +118,7 @@ const evalFormula = x => {
   const fn = elemValue("1");
   return fn("A");
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-063.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-063.md
index fbaf60e87a7..d1492aa5cbf 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-063.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-063.md
@@ -108,6 +108,7 @@ const charRange = (start, end) =>
     String.fromCharCode(x)
   );
 
+--fcc-editable-region--
 const evalFormula = x => {
   const rangeRegex = /([A-J])([1-9][0-9]?):([A-J])([1-9][0-9]?)/gi;
   const rangeFromString = (n1, n2) => range(parseInt(n1), parseInt(n2));
@@ -115,6 +116,7 @@ const evalFormula = x => {
   const fn = elemValue("1");
   return fn("A");
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-064.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-064.md
index 76c4337f252..8d17549a291 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-064.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-064.md
@@ -106,6 +106,7 @@ const charRange = (start, end) =>
     String.fromCharCode(x)
   );
 
+--fcc-editable-region--
 const evalFormula = x => {
   const rangeRegex = /([A-J])([1-9][0-9]?):([A-J])([1-9][0-9]?)/gi;
   const rangeFromString = (n1, n2) => range(parseInt(n1), parseInt(n2));
@@ -114,6 +115,7 @@ const evalFormula = x => {
   const fn = elemValue("1");
   return fn("A");
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-065.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-065.md
index bc429581127..1c388711e2f 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-065.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-065.md
@@ -110,6 +110,7 @@ const charRange = (start, end) =>
     String.fromCharCode(x)
   );
 
+--fcc-editable-region--
 const evalFormula = x => {
   const rangeRegex = /([A-J])([1-9][0-9]?):([A-J])([1-9][0-9]?)/gi;
   const rangeFromString = (n1, n2) => range(parseInt(n1), parseInt(n2));
@@ -118,6 +119,7 @@ const evalFormula = x => {
   const fn = elemValue("1");
   return fn("A");
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-066.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-066.md
index d5c45eb00c5..45e6af501cc 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-066.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-066.md
@@ -106,6 +106,7 @@ const charRange = (start, end) =>
     String.fromCharCode(x)
   );
 
+--fcc-editable-region--
 const evalFormula = x => {
   const rangeRegex = /([A-J])([1-9][0-9]?):([A-J])([1-9][0-9]?)/gi;
   const rangeFromString = (n1, n2) => range(parseInt(n1), parseInt(n2));
@@ -114,6 +115,7 @@ const evalFormula = x => {
   const fn = elemValue("1");
   return fn("A");
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-067.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-067.md
index c27bafcbec0..19bbc068cd3 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-067.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-067.md
@@ -116,6 +116,7 @@ const charRange = (start, end) =>
     String.fromCharCode(x)
   );
 
+--fcc-editable-region--
 const evalFormula = x => {
   const rangeRegex = /([A-J])([1-9][0-9]?):([A-J])([1-9][0-9]?)/gi;
   const rangeFromString = (n1, n2) => range(parseInt(n1), parseInt(n2));
@@ -124,6 +125,7 @@ const evalFormula = x => {
   const fn = elemValue("1");
   return fn("A");
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-068.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-068.md
index 43b2a707340..e220cf656e5 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-068.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-068.md
@@ -110,6 +110,7 @@ const charRange = (start, end) =>
     String.fromCharCode(x)
   );
 
+--fcc-editable-region--
 const evalFormula = x => {
   const rangeRegex = /([A-J])([1-9][0-9]?):([A-J])([1-9][0-9]?)/gi;
   const rangeFromString = (n1, n2) => range(parseInt(n1), parseInt(n2));
@@ -118,6 +119,7 @@ const evalFormula = x => {
   const fn = elemValue("1");
   return fn("A");
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-069.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-069.md
index fc4da1fea3a..eaff17e3511 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-069.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-069.md
@@ -108,6 +108,7 @@ const charRange = (start, end) =>
     String.fromCharCode(x)
   );
 
+--fcc-editable-region--
 const evalFormula = x => {
   const rangeRegex = /([A-J])([1-9][0-9]?):([A-J])([1-9][0-9]?)/gi;
   const rangeFromString = (n1, n2) => range(parseInt(n1), parseInt(n2));
@@ -116,6 +117,7 @@ const evalFormula = x => {
   const fn = elemValue("1");
   return fn("A");
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-070.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-070.md
index 64235330d9b..03ec1f65ba2 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-070.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-070.md
@@ -110,6 +110,7 @@ const charRange = (start, end) =>
     String.fromCharCode(x)
   );
 
+--fcc-editable-region--
 const evalFormula = x => {
   const rangeRegex = /([A-J])([1-9][0-9]?):([A-J])([1-9][0-9]?)/gi;
   const rangeFromString = (n1, n2) => range(parseInt(n1), parseInt(n2));
@@ -118,6 +119,7 @@ const evalFormula = x => {
   const varRangeExpanded = x.replace(rangeRegex, "");
   return varRangeExpanded;
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-071.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-071.md
index 75f967b2bc1..b1139d99d92 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-071.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-071.md
@@ -110,6 +110,7 @@ const charRange = (start, end) =>
     String.fromCharCode(x)
   );
 
+--fcc-editable-region--
 const evalFormula = x => {
   const rangeRegex = /([A-J])([1-9][0-9]?):([A-J])([1-9][0-9]?)/gi;
   const rangeFromString = (n1, n2) => range(parseInt(n1), parseInt(n2));
@@ -120,6 +121,7 @@ const evalFormula = x => {
   );
   return varRangeExpanded;
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-072.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-072.md
index 67061764270..a481e918c67 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-072.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-072.md
@@ -112,6 +112,7 @@ const charRange = (start, end) =>
     String.fromCharCode(x)
   );
 
+--fcc-editable-region--
 const evalFormula = x => {
   const rangeRegex = /([A-J])([1-9][0-9]?):([A-J])([1-9][0-9]?)/gi;
   const rangeFromString = (n1, n2) => range(parseInt(n1), parseInt(n2));
@@ -122,6 +123,7 @@ const evalFormula = x => {
   );
   return varRangeExpanded;
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-073.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-073.md
index ed74ae0d69b..64e48966f02 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-073.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-073.md
@@ -108,6 +108,7 @@ const charRange = (start, end) =>
     String.fromCharCode(x)
   );
 
+--fcc-editable-region--
 const evalFormula = x => {
   const rangeRegex = /([A-J])([1-9][0-9]?):([A-J])([1-9][0-9]?)/gi;
   const rangeFromString = (n1, n2) => range(parseInt(n1), parseInt(n2));
@@ -118,6 +119,7 @@ const evalFormula = x => {
   );
   return varRangeExpanded;
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-074.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-074.md
index 9bf1af734fe..57da365160d 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-074.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-074.md
@@ -108,6 +108,7 @@ const charRange = (start, end) =>
     String.fromCharCode(x)
   );
 
+--fcc-editable-region--
 const evalFormula = x => {
   const rangeRegex = /([A-J])([1-9][0-9]?):([A-J])([1-9][0-9]?)/gi;
   const rangeFromString = (n1, n2) => range(parseInt(n1), parseInt(n2));
@@ -118,6 +119,7 @@ const evalFormula = x => {
   );
   return varRangeExpanded;
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-075.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-075.md
index 8d174ebda3a..2dc9ec5c8ab 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-075.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-075.md
@@ -110,6 +110,7 @@ const charRange = (start, end) =>
     String.fromCharCode(x)
   );
 
+--fcc-editable-region--
 const evalFormula = x => {
   const rangeRegex = /([A-J])([1-9][0-9]?):([A-J])([1-9][0-9]?)/gi;
   const rangeFromString = (n1, n2) => range(parseInt(n1), parseInt(n2));
@@ -122,6 +123,7 @@ const evalFormula = x => {
   const varExpanded = varRangeExpanded.replace(varRegex, "");
   return varExpanded;
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-076.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-076.md
index b4ec84d0983..0516f1f77e6 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-076.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-076.md
@@ -104,6 +104,7 @@ const charRange = (start, end) =>
     String.fromCharCode(x)
   );
 
+--fcc-editable-region--
 const evalFormula = x => {
   const rangeRegex = /([A-J])([1-9][0-9]?):([A-J])([1-9][0-9]?)/gi;
   const rangeFromString = (n1, n2) => range(parseInt(n1), parseInt(n2));
@@ -119,6 +120,7 @@ const evalFormula = x => {
   );
   return varExpanded;
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-077.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-077.md
index cec5c452105..a1022f45c6a 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-077.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-077.md
@@ -106,6 +106,7 @@ const charRange = (start, end) =>
     String.fromCharCode(x)
   );
 
+--fcc-editable-region--
 const evalFormula = x => {
   const rangeRegex = /([A-J])([1-9][0-9]?):([A-J])([1-9][0-9]?)/gi;
   const rangeFromString = (n1, n2) => range(parseInt(n1), parseInt(n2));
@@ -122,6 +123,7 @@ const evalFormula = x => {
   const functionExpanded = applyFn(varExpanded);
   return functionExpanded;
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-078.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-078.md
index a1ed6f267ed..5617221e798 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-078.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-078.md
@@ -129,7 +129,9 @@ const evalFormula = x => {
     : evalFormula(functionExpanded);
 };
 
+--fcc-editable-region--
 
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-079.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-079.md
index 99fc2eab600..06b401c7e8e 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-079.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-079.md
@@ -127,7 +127,9 @@ const evalFormula = x => {
     : evalFormula(functionExpanded);
 };
 
+--fcc-editable-region--
 window.onload = () => { };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-080.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-080.md
index fde11b78b6b..59443f50dc9 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-080.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-080.md
@@ -127,10 +127,12 @@ const evalFormula = x => {
     : evalFormula(functionExpanded);
 };
 
+--fcc-editable-region--
 window.onload = () => {
   const container = document.getElementById("container");
   const letters = charRange("A", "J");
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-081.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-081.md
index bc1aa82c445..3a3a6f126c8 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-081.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-081.md
@@ -127,6 +127,7 @@ const evalFormula = x => {
     : evalFormula(functionExpanded);
 };
 
+--fcc-editable-region--
 window.onload = () => {
   const container = document.getElementById("container");
   const createLabel = name => {
@@ -134,6 +135,7 @@ window.onload = () => {
   };
   const letters = charRange("A", "J");
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-082.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-082.md
index a3df1c553de..a9a1dcc5726 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-082.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-082.md
@@ -133,6 +133,7 @@ const evalFormula = x => {
     : evalFormula(functionExpanded);
 };
 
+--fcc-editable-region--
 window.onload = () => {
   const container = document.getElementById("container");
   const createLabel = name => {
@@ -140,6 +141,7 @@ window.onload = () => {
   };
   const letters = charRange("A", "J");
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-083.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-083.md
index 26e46c2878c..780a9dab7fe 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-083.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-083.md
@@ -125,6 +125,7 @@ const evalFormula = x => {
     : evalFormula(functionExpanded);
 };
 
+--fcc-editable-region--
 window.onload = () => {
   const container = document.getElementById("container");
   const createLabel = name => {
@@ -135,6 +136,7 @@ window.onload = () => {
   };
   const letters = charRange("A", "J");
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-084.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-084.md
index 34669dffccd..ccfac003142 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-084.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-084.md
@@ -123,6 +123,7 @@ const evalFormula = x => {
     : evalFormula(functionExpanded);
 };
 
+--fcc-editable-region--
 window.onload = () => {
   const container = document.getElementById("container");
   const createLabel = name => {
@@ -134,6 +135,7 @@ window.onload = () => {
   const letters = charRange("A", "J");
   letters.forEach(createLabel);
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-085.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-085.md
index fd72df15dd4..5216d89d1d9 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-085.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-085.md
@@ -127,6 +127,7 @@ const evalFormula = x => {
     : evalFormula(functionExpanded);
 };
 
+--fcc-editable-region--
 window.onload = () => {
   const container = document.getElementById("container");
   const createLabel = name => {
@@ -139,6 +140,7 @@ window.onload = () => {
   letters.forEach(createLabel);
   range(1, 99);
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-086.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-086.md
index e060befc16b..544000db907 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-086.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-086.md
@@ -127,6 +127,7 @@ const evalFormula = x => {
     : evalFormula(functionExpanded);
 };
 
+--fcc-editable-region--
 window.onload = () => {
   const container = document.getElementById("container");
   const createLabel = name => {
@@ -139,6 +140,7 @@ window.onload = () => {
   letters.forEach(createLabel);
   range(1, 99).forEach(createLabel);
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-087.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-087.md
index 37097ee823c..bf8bee8395a 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-087.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-087.md
@@ -127,6 +127,7 @@ const evalFormula = x => {
     : evalFormula(functionExpanded);
 };
 
+--fcc-editable-region--
 window.onload = () => {
   const container = document.getElementById("container");
   const createLabel = name => {
@@ -141,6 +142,7 @@ window.onload = () => {
     createLabel(x);
   });
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-088.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-088.md
index 24b1c85aa15..d57aa617713 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-088.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-088.md
@@ -127,6 +127,7 @@ const evalFormula = x => {
     : evalFormula(functionExpanded);
 };
 
+--fcc-editable-region--
 window.onload = () => {
   const container = document.getElementById("container");
   const createLabel = name => {
@@ -144,7 +145,7 @@ window.onload = () => {
     });
   });
 };
-
+--fcc-editable-region--
 
 </script>
 ```
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-089.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-089.md
index b580f6d81da..4568ec50b24 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-089.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-089.md
@@ -134,6 +134,7 @@ const evalFormula = x => {
     : evalFormula(functionExpanded);
 };
 
+--fcc-editable-region--
 window.onload = () => {
   const container = document.getElementById("container");
   const createLabel = name => {
@@ -151,6 +152,7 @@ window.onload = () => {
     });
   });
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-090.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-090.md
index 4b4bd9a3542..6543d3124fb 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-090.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-090.md
@@ -148,8 +148,9 @@ window.onload = () => {
     });
   });
 };
+--fcc-editable-region--
 
-
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-091.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-091.md
index 88170b3d70e..378c01975ac 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-091.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-091.md
@@ -149,9 +149,11 @@ window.onload = () => {
   });
 };
 
+--fcc-editable-region--
 const update = event => {
   const element = event.target;
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-092.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-092.md
index 33de7a0ac09..93968d4e378 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-092.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-092.md
@@ -151,10 +151,12 @@ window.onload = () => {
   });
 };
 
+--fcc-editable-region--
 const update = event => {
   const element = event.target;
   const value = element.value.replace(/\s/g, "");
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-093.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-093.md
index 78d77f353ff..dcc989ea328 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-093.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-093.md
@@ -149,11 +149,13 @@ window.onload = () => {
   });
 };
 
+--fcc-editable-region--
 const update = event => {
   const element = event.target;
   const value = element.value.replace(/\s/g, "");
   if (!value.includes(element.id)) {}
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-094.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-094.md
index 96aa8385b86..ce97294c369 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-094.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-094.md
@@ -147,11 +147,13 @@ window.onload = () => {
   });
 };
 
+--fcc-editable-region--
 const update = event => {
   const element = event.target;
   const value = element.value.replace(/\s/g, "");
   if (!value.includes(element.id) && value[0] === "=") {}
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-095.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-095.md
index 73c51a143e3..1eaf868ad16 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-095.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-095.md
@@ -147,6 +147,7 @@ window.onload = () => {
   });
 };
 
+--fcc-editable-region--
 const update = event => {
   const element = event.target;
   const value = element.value.replace(/\s/g, "");
@@ -154,6 +155,7 @@ const update = event => {
     console.log(value.slice(0, 2));
   }
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-096.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-096.md
index 3b8fda0fd55..cd6f2405a86 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-096.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-096.md
@@ -149,6 +149,7 @@ window.onload = () => {
   });
 };
 
+--fcc-editable-region--
 const update = event => {
   const element = event.target;
   const value = element.value.replace(/\s/g, "");
@@ -156,6 +157,7 @@ const update = event => {
     console.log(value.slice(1));
   }
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-097.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-097.md
index 376ff4df094..fb91f29be96 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-097.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-097.md
@@ -87,9 +87,11 @@ const highPrecedence = str => {
   return str === str2 ? str : highPrecedence(str2);
 };
 
+--fcc-editable-region--
 const spreadsheetFunctions = {
   "": x => x
 };
+--fcc-editable-region--
 
 
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-098.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-098.md
index 873138bf439..c933b24aaac 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-098.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-098.md
@@ -81,10 +81,12 @@ const highPrecedence = str => {
   return str === str2 ? str : highPrecedence(str2);
 };
 
+--fcc-editable-region--
 const spreadsheetFunctions = {
   "": x => x,
   random: ([x, y]) => x
 };
+--fcc-editable-region--
 
 
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-099.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-099.md
index ab7a997ab2c..2a5ee766e3d 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-099.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-099.md
@@ -166,7 +166,9 @@ const update = event => {
   }
 };
 
+--fcc-editable-region--
 
+--fcc-editable-region--
 </script>
 ```
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-100.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-100.md
index 21632d6a970..2f419cf2876 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-100.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-100.md
@@ -152,6 +152,7 @@ window.onload = () => {
   });
 };
 
+--fcc-editable-region--
 const update = event => {
   const element = event.target;
   const value = element.value.replace(/\s/g, "");
@@ -159,6 +160,7 @@ const update = event => {
     element.value = evalFormula(value.slice(1));
   }
 };
+--fcc-editable-region--
 
 // console.log(spreadsheetFunctions["random"](1, 1000) === spreadsheetFunctions["random"](1, 1000))
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-101.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-101.md
index 456fdf7b032..176257a88b5 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-101.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-101.md
@@ -150,6 +150,7 @@ window.onload = () => {
   });
 };
 
+--fcc-editable-region--
 const update = event => {
   // window.onload();
   const element = event.target;
@@ -158,6 +159,7 @@ const update = event => {
     element.value = evalFormula(value.slice(1));
   }
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-102.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-102.md
index 0689327cf35..ad427105522 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-102.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-102.md
@@ -152,6 +152,7 @@ window.onload = () => {
   });
 };
 
+--fcc-editable-region--
 const update = event => {
   // highPrecedence("2*2");
   const element = event.target;
@@ -160,6 +161,7 @@ const update = event => {
     element.value = evalFormula(value.slice(1));
   }
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-103.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-103.md
index b58e8499348..231159b2b34 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-103.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-103.md
@@ -148,6 +148,7 @@ window.onload = () => {
   });
 };
 
+--fcc-editable-region--
 const update = event => {
   console.log(highPrecedence("2*2") === highPrecedence("2*2"));
   const element = event.target;
@@ -156,6 +157,7 @@ const update = event => {
     element.value = evalFormula(value.slice(1));
   }
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-104.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-104.md
index 54223c093b8..36fd2f83b90 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-104.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-104.md
@@ -110,6 +110,7 @@ const charRange = (start, end) =>
     String.fromCharCode(x)
   );
 
+--fcc-editable-region--
 const evalFormula = x => {
   const rangeRegex = /([A-J])([1-9][0-9]?):([A-J])([1-9][0-9]?)/gi;
   const rangeFromString = (n1, n2) => range(parseInt(n1), parseInt(n2));
@@ -128,6 +129,7 @@ const evalFormula = x => {
     ? functionExpanded
     : evalFormula(functionExpanded);
 };
+--fcc-editable-region--
 
 window.onload = () => {
   const container = document.getElementById("container");
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-105.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-105.md
index 98e4e37e01e..4b9e711aae6 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-105.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-105.md
@@ -107,6 +107,7 @@ const charRange = (start, end) =>
     String.fromCharCode(x)
   );
 
+--fcc-editable-region--
 const evalFormula = x => {
   const rangeRegex = /([A-J])([1-9][0-9]?):([A-J])([1-9][0-9]?)/gi;
   const rangeFromString = (n1, n2) => range(parseInt(n1), parseInt(n2));
@@ -125,6 +126,7 @@ const evalFormula = x => {
     ? functionExpanded
     : evalFormula(functionExpanded);
 };
+--fcc-editable-region--
 
 window.onload = () => {
   const container = document.getElementById("container");
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-106.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-106.md
index fc0177c41e9..39584a049ae 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-106.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-106.md
@@ -152,6 +152,7 @@ window.onload = () => {
   });
 };
 
+--fcc-editable-region--
 const update = event => {
   const element = event.target;
   const value = element.value.replace(/\s/g, "");
@@ -159,6 +160,7 @@ const update = event => {
     element.value = evalFormula(value.slice(1));
   }
 };
+--fcc-editable-region--
 
 
 </script>
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-107.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-107.md
index 53334390738..1ab52bf8124 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-107.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-107.md
@@ -105,6 +105,7 @@ const charRange = (start, end) =>
     String.fromCharCode(x)
   );
 
+--fcc-editable-region--
 const evalFormula = (x, cells) => {
   const rangeRegex = /([A-J])([1-9][0-9]?):([A-J])([1-9][0-9]?)/gi;
   const rangeFromString = (n1, n2) => range(parseInt(n1), parseInt(n2));
@@ -124,6 +125,7 @@ const evalFormula = (x, cells) => {
     : evalFormula(functionExpanded);
   
 };
+--fcc-editable-region--
 
 window.onload = () => {
   const container = document.getElementById("container");
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-108.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-108.md
index b375fce4190..11e0b2d0bbc 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-108.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-108.md
@@ -106,7 +106,9 @@ const charRange = (start, end) =>
   );
 
 const evalFormula = (x, cells) => {
+--fcc-editable-region--
   
+--fcc-editable-region--
   const rangeRegex = /([A-J])([1-9][0-9]?):([A-J])([1-9][0-9]?)/gi;
   const rangeFromString = (n1, n2) => range(parseInt(n1), parseInt(n2));
   const elemValue = n => c => ""
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-109.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-109.md
index 8b37349d79d..d4c961be237 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-109.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-109.md
@@ -112,7 +112,9 @@ const charRange = (start, end) =>
   );
 
 const evalFormula = (x, cells) => {
+--fcc-editable-region--
   const idToText = id => cells;
+--fcc-editable-region--
   
   const rangeRegex = /([A-J])([1-9][0-9]?):([A-J])([1-9][0-9]?)/gi;
   const rangeFromString = (n1, n2) => range(parseInt(n1), parseInt(n2));
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-110.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-110.md
index 9a2e4c945c3..abdc6794679 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-110.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-110.md
@@ -110,7 +110,9 @@ const charRange = (start, end) =>
   );
 
 const evalFormula = (x, cells) => {
+--fcc-editable-region--
   const idToText = id => cells.find(cell => cell === id);
+--fcc-editable-region--
   const rangeRegex = /([A-J])([1-9][0-9]?):([A-J])([1-9][0-9]?)/gi;
   const rangeFromString = (n1, n2) => range(parseInt(n1), parseInt(n2));
   const elemValue = n => c => ""
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-111.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-111.md
index 9136d270698..4baca0e6cc3 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-111.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-111.md
@@ -110,7 +110,9 @@ const charRange = (start, end) =>
   );
 
 const evalFormula = (x, cells) => {
+--fcc-editable-region--
   const idToText = id => cells.find(cell => cell.id === id);
+--fcc-editable-region--
   const rangeRegex = /([A-J])([1-9][0-9]?):([A-J])([1-9][0-9]?)/gi;
   const rangeFromString = (n1, n2) => range(parseInt(n1), parseInt(n2));
   const elemValue = n => c => ""
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-112.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-112.md
index f9ff4444c98..a2c5b9b1bef 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-112.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-112.md
@@ -109,7 +109,9 @@ const evalFormula = (x, cells) => {
   const idToText = id => cells.find(cell => cell.id === id).value;
   const rangeRegex = /([A-J])([1-9][0-9]?):([A-J])([1-9][0-9]?)/gi;
   const rangeFromString = (n1, n2) => range(parseInt(n1), parseInt(n2));
+--fcc-editable-region--
   const elemValue = n => c => ""
+--fcc-editable-region--
   const addChars = c1 => c2 => n => charRange(c1, c2).map(elemValue(n));
   const varRangeExpanded = x.replace(rangeRegex, (_, c1, n1, c2, n2) =>
     rangeFromString(n1, n2).map(addChars(c1)(c2))
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-113.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-113.md
index b2517f72eb9..637af181723 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-113.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-113.md
@@ -117,10 +117,12 @@ const evalFormula = (x, cells) => {
     rangeFromString(n1, n2).map(addChars(c1)(c2))
   );
   const varRegex = /[A-J][1-9][0-9]?/gi;
+--fcc-editable-region--
   const varExpanded = varRangeExpanded.replace(
     varRegex,
     match => ""
   );
+--fcc-editable-region--
   
   const functionExpanded = applyFn(varExpanded);
   return functionExpanded === x
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-114.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-114.md
index db61c0941aa..d12140aa462 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-114.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-114.md
@@ -79,10 +79,12 @@ const highPrecedence = str => {
   return str === str2 ? str : highPrecedence(str2);
 };
 
+--fcc-editable-region--
 const spreadsheetFunctions = {
   "": x => x,
   random: ([x, y]) => Math.floor(Math.random() * y + x)
 };
+--fcc-editable-region--
 
 const applyFn = str => {
   const noHigh = highPrecedence(str);
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-115.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-115.md
index 2abd01c55fc..c966a9161ed 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-115.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-115.md
@@ -81,11 +81,13 @@ const highPrecedence = str => {
   return str === str2 ? str : highPrecedence(str2);
 };
 
+--fcc-editable-region--
 const spreadsheetFunctions = {
   "": x => x,
   random: ([x, y]) => Math.floor(Math.random() * y + x),
   increment: nums => nums.map(x => x + 1)
 };
+--fcc-editable-region--
 
 
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-116.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-116.md
index 2918340f31d..5483ee8a3e9 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-116.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-116.md
@@ -85,12 +85,14 @@ const highPrecedence = str => {
   return str === str2 ? str : highPrecedence(str2);
 };
 
+--fcc-editable-region--
 const spreadsheetFunctions = {
   "": x => x,
   random: ([x, y]) => Math.floor(Math.random() * y + x),
   increment: nums => nums.map(x => x + 1),
   firsttwo: arr => arr.slice(0, 2)
 };
+--fcc-editable-region--
 
 
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-117.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-117.md
index d2948614d4d..3e61d996f85 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-117.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-117.md
@@ -84,7 +84,9 @@ const highPrecedence = str => {
   const str2 = infixEval(str, regex);
   return str === str2 ? str : highPrecedence(str2);
 };
+--fcc-editable-region--
 
+--fcc-editable-region--
 const spreadsheetFunctions = {
   "": x => x,
   random: ([x, y]) => Math.floor(Math.random() * y + x),
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-118.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-118.md
index f8929ce339c..8c4b6a9e314 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-118.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-118.md
@@ -88,6 +88,7 @@ const highPrecedence = str => {
 
 const isEven = num => num % 2 === 0;
 
+--fcc-editable-region--
 const spreadsheetFunctions = {
   "": x => x,
   random: ([x, y]) => Math.floor(Math.random() * y + x),
@@ -95,6 +96,7 @@ const spreadsheetFunctions = {
   firsttwo: arr => arr.slice(0, 2),
   lasttwo: arr => arr.slice(-2)
 };
+--fcc-editable-region--
 
 
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-119.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-119.md
index 97a6be5ef9d..c441a9459d8 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-119.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-119.md
@@ -91,6 +91,7 @@ const highPrecedence = str => {
 
 const isEven = num => num % 2 === 0;
 
+--fcc-editable-region--
 const spreadsheetFunctions = {
   "": x => x,
   random: ([x, y]) => Math.floor(Math.random() * y + x),
@@ -99,6 +100,7 @@ const spreadsheetFunctions = {
   lasttwo: arr => arr.slice(-2),
   even: nums => nums.filter(isEven)
 };
+--fcc-editable-region--
 
 
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-120.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-120.md
index 41dd0fed650..787472aea1d 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-120.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-120.md
@@ -83,6 +83,7 @@ const highPrecedence = str => {
 
 const isEven = num => num % 2 === 0;
 
+--fcc-editable-region--
 const spreadsheetFunctions = {
   "": x => x,
   random: ([x, y]) => Math.floor(Math.random() * y + x),
@@ -92,6 +93,7 @@ const spreadsheetFunctions = {
   even: nums => nums.filter(isEven),
   sum: nums => nums.reduce((a, x) => a + x)
 };
+--fcc-editable-region--
 
 
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-121.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-121.md
index 28fec42a1d2..f032db3ac16 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-121.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-121.md
@@ -91,6 +91,7 @@ const highPrecedence = str => {
 
 const isEven = num => num % 2 === 0;
 
+--fcc-editable-region--
 const spreadsheetFunctions = {
   "": x => x,
   random: ([x, y]) => Math.floor(Math.random() * y + x),
@@ -101,6 +102,7 @@ const spreadsheetFunctions = {
   sum: nums => nums.reduce((a, x) => a + x),
   has2: arr => arr.includes(2)
 };
+--fcc-editable-region--
 
 
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-122.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-122.md
index dc00ccf4e4a..6b5714247b5 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-122.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-122.md
@@ -82,6 +82,7 @@ const highPrecedence = str => {
 
 const isEven = num => num % 2 === 0;
 
+--fcc-editable-region--
 const spreadsheetFunctions = {
   "": x => x,
   random: ([x, y]) => Math.floor(Math.random() * y + x),
@@ -93,6 +94,7 @@ const spreadsheetFunctions = {
   has2: arr => arr.includes(2),
   nodups: arr => arr.reduce((a, x) => a.includes(x), [])
 };
+--fcc-editable-region--
 
 
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-123.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-123.md
index 7b9224fb8d6..8f15f9adfd4 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-123.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-123.md
@@ -86,6 +86,7 @@ const highPrecedence = str => {
 };
 
 const isEven = num => num % 2 === 0;
+--fcc-editable-region--
 
 const spreadsheetFunctions = {
   "": x => x,
@@ -98,6 +99,7 @@ const spreadsheetFunctions = {
   has2: arr => arr.includes(2),
   nodups: arr => arr.reduce((a, x) => a.includes(x) ? a : a.concat(x), [])
 };
+--fcc-editable-region--
 
 
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-124.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-124.md
index 73e8f892882..eef96f2d471 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-124.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-124.md
@@ -82,6 +82,7 @@ const highPrecedence = str => {
 const isEven = num => num % 2 === 0;
 const sum = nums => nums.reduce((a, x) => a + x);
 
+--fcc-editable-region--
 const spreadsheetFunctions = {
   "": x => x,
   random: ([x, y]) => Math.floor(Math.random() * y + x),
@@ -92,6 +93,7 @@ const spreadsheetFunctions = {
   has2: arr => arr.includes(2),
   nodups: arr => arr.reduce((a, x) => a.includes(x) ? a : a.concat(x), [])
 };
+--fcc-editable-region--
 
 
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-125.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-125.md
index 326042ff90b..cb3b30d8c4f 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-125.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-125.md
@@ -82,6 +82,7 @@ const highPrecedence = str => {
 };
 
 const isEven = num => num % 2 === 0;
+--fcc-editable-region--
 const sum = nums => nums.reduce((a, x) => a + x);
 
 const spreadsheetFunctions = {
@@ -95,6 +96,7 @@ const spreadsheetFunctions = {
   has2: arr => arr.includes(2),
   nodups: arr => arr.reduce((a, x) => a.includes(x) ? a : a.concat(x), [])
 };
+--fcc-editable-region--
 
 
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-126.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-126.md
index 6565a565de3..621e4cc4fbc 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-126.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-126.md
@@ -92,6 +92,7 @@ const isEven = num => num % 2 === 0;
 const sum = nums => nums.reduce((a, x) => a + x);
 const average = nums => sum(nums) / nums.length;
 
+--fcc-editable-region--
 const spreadsheetFunctions = {
   "": x => x,
   random: ([x, y]) => Math.floor(Math.random() * y + x),
@@ -104,6 +105,7 @@ const spreadsheetFunctions = {
   has2: arr => arr.includes(2),
   nodups: arr => arr.reduce((a, x) => a.includes(x) ? a : a.concat(x), [])
 };
+--fcc-editable-region--
 
 
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-127.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-127.md
index f0911314b97..8d27ee2bf76 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-127.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-127.md
@@ -80,7 +80,9 @@ const highPrecedence = str => {
 const isEven = num => num % 2 === 0;
 const sum = nums => nums.reduce((a, x) => a + x);
 const average = nums => sum(nums) / nums.length;
+--fcc-editable-region--
 
+--fcc-editable-region--
 const spreadsheetFunctions = {
   "": x => x,
   random: ([x, y]) => Math.floor(Math.random() * y + x),
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-128.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-128.md
index 2e3f7b143a1..08ffbd94e4a 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-128.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-128.md
@@ -89,7 +89,9 @@ const isEven = num => num % 2 === 0;
 const sum = nums => nums.reduce((a, x) => a + x);
 const average = nums => sum(nums) / nums.length;
 
+--fcc-editable-region--
 const median = nums => {}; 
+--fcc-editable-region--
 
 const spreadsheetFunctions = {
   "": x => x,
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-129.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-129.md
index 53dd43a54df..49b025f4b1e 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-129.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-129.md
@@ -93,9 +93,11 @@ const isEven = num => num % 2 === 0;
 const sum = nums => nums.reduce((a, x) => a + x);
 const average = nums => sum(nums) / nums.length;
 
+--fcc-editable-region--
 const median = nums => {
   const sorted = nums.sort();
 }; 
+--fcc-editable-region--
 
 const spreadsheetFunctions = {
   "": x => x,
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-130.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-130.md
index ec131415524..cad2f5aa466 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-130.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-130.md
@@ -87,9 +87,11 @@ const isEven = num => num % 2 === 0;
 const sum = nums => nums.reduce((a, x) => a + x);
 const average = nums => sum(nums) / nums.length;
 
+--fcc-editable-region--
 const median = nums => {
   const sorted = nums.sort((x, y) => x - y);
 }; 
+--fcc-editable-region--
 
 const spreadsheetFunctions = {
   "": x => x,
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-131.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-131.md
index 2b72acbdabd..df39b579f78 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-131.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-131.md
@@ -85,9 +85,11 @@ const isEven = num => num % 2 === 0;
 const sum = nums => nums.reduce((a, x) => a + x);
 const average = nums => sum(nums) / nums.length;
 
+--fcc-editable-region--
 const median = nums => {
   const sorted = nums.slice().sort((x, y) => x - y);
 }; 
+--fcc-editable-region--
 
 const spreadsheetFunctions = {
   "": x => x,
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-132.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-132.md
index ad2c6693699..1e4f1aca372 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-132.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-132.md
@@ -81,11 +81,13 @@ const isEven = num => num % 2 === 0;
 const sum = nums => nums.reduce((a, x) => a + x);
 const average = nums => sum(nums) / nums.length;
 
+--fcc-editable-region--
 const median = nums => {
   const sorted = nums.slice().sort((x, y) => x - y);
   const length = sorted.length;
   const middle = sorted.length / 2 - 1;
 }; 
+--fcc-editable-region--
 
 
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-133.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-133.md
index be42edb6eaa..4cf66a6dd6a 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-133.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-133.md
@@ -83,12 +83,14 @@ const isEven = num => num % 2 === 0;
 const sum = nums => nums.reduce((a, x) => a + x);
 const average = nums => sum(nums) / nums.length;
 
+--fcc-editable-region--
 const median = nums => {
   const sorted = nums.slice().sort((x, y) => x - y);
   const length = sorted.length;
   const middle = sorted.length / 2 - 1;
   return isEven(length);
 }; 
+--fcc-editable-region--
 
 
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-134.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-134.md
index 09507ec0674..2428ff3a79d 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-134.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-134.md
@@ -93,6 +93,7 @@ const median = nums => {
     : sorted[middle + 0.5];
 }; 
 
+--fcc-editable-region--
 const spreadsheetFunctions = {
   "": x => x,
   random: ([x, y]) => Math.floor(Math.random() * y + x),
@@ -106,6 +107,7 @@ const spreadsheetFunctions = {
   nodups: arr => arr.reduce((a, x) => a.includes(x) ? a : a.concat(x), []),
   range: arr => range(...arr)
 };
+--fcc-editable-region--
 
 
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-135.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-135.md
index a837859f960..ff91ae909fd 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-135.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-135.md
@@ -96,6 +96,7 @@ const median = nums => {
     : sorted[middle + 0.5];
 }; 
 
+--fcc-editable-region--
 const spreadsheetFunctions = {
   "": x => x,
   random: ([x, y]) => Math.floor(Math.random() * y + x),
@@ -110,6 +111,7 @@ const spreadsheetFunctions = {
   nodups: arr => arr.reduce((a, x) => a.includes(x) ? a : a.concat(x), []),
   range: arr => range(...arr)
 };
+--fcc-editable-region--
 
 
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-136.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-136.md
index a7fa4cb7a46..ddede0016d6 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-136.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-136.md
@@ -96,6 +96,7 @@ const median = nums => {
     : sorted[middle + 0.5];
 }; 
 
+--fcc-editable-region--
 const spreadsheetFunctions = {
   "": x => x,
   random: ([x, y]) => Math.floor(Math.random() * y + x),
@@ -111,6 +112,7 @@ const spreadsheetFunctions = {
   range: arr => range(...arr),
   someeven: arr => arr.some(isEven)
 };
+--fcc-editable-region--
 
 
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-137.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-137.md
index d8697d4b111..c475cf8ba22 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-137.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-137.md
@@ -128,8 +128,10 @@ const applyFn = str => {
   );
 };
 
+--fcc-editable-region--
 const range = (start, end) =>
   start > end ? [] : [start].concat(range(start + 1, end));
+--fcc-editable-region--
 
 
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-138.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-138.md
index 0c1547c2f4c..52e294c3655 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-138.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-138.md
@@ -126,7 +126,9 @@ const applyFn = str => {
   );
 };
 
+--fcc-editable-region--
 const range = (start, end) => start
+--fcc-editable-region--
 
 
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-139.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-139.md
index d124cc81eca..ce1e1c87c73 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-139.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-139.md
@@ -128,7 +128,9 @@ const applyFn = str => {
   );
 };
 
+--fcc-editable-region--
 const range = (start, end) => Array(end - start + 1);
+--fcc-editable-region--
 
 
 
diff --git a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-140.md b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-140.md
index 4c3ad2c702f..9630c3210b7 100644
--- a/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-140.md
+++ b/curriculum/challenges/english/15-javascript-algorithms-and-data-structures-22/learn-functional-programming-by-building-a-spreadsheet/step-140.md
@@ -132,7 +132,9 @@ const applyFn = str => {
   );
 };
 
+--fcc-editable-region--
 const range = (start, end) => Array(end - start + 1).fill(start);
+--fcc-editable-region--