diff --git a/lib/rest/static/decorated/api.github.com.json b/lib/rest/static/decorated/api.github.com.json
index ae1bfddfa6..b95304379a 100644
--- a/lib/rest/static/decorated/api.github.com.json
+++ b/lib/rest/static/decorated/api.github.com.json
@@ -71284,16 +71284,16 @@
               },
               "position": {
                 "type": "integer",
-                "description": "<p>The position in the diff where you want to add a review comment. Note this value is not the same as the line number in the file. For help finding the position value, read the note above.</p>",
+                "description": "<p><strong>Required without <code>comfort-fade</code> preview unless using <code>in_reply_to</code></strong>. The position in the diff where you want to add a review comment. Note this value is not the same as the line number in the file. For help finding the position value, read the note above.</p>",
                 "name": "position",
                 "in": "body",
                 "rawType": "integer",
-                "rawDescription": "The position in the diff where you want to add a review comment. Note this value is not the same as the line number in the file. For help finding the position value, read the note above.",
+                "rawDescription": "**Required without `comfort-fade` preview unless using `in_reply_to`**. The position in the diff where you want to add a review comment. Note this value is not the same as the line number in the file. For help finding the position value, read the note above.",
                 "childParamsGroups": []
               },
               "side": {
                 "type": "string",
-                "description": "<p>In a split diff view, the side of the diff that the pull request's changes appear on. Can be <code>LEFT</code> or <code>RIGHT</code>. Use <code>LEFT</code> for deletions that appear in red. Use <code>RIGHT</code> for additions that appear in green or unchanged lines that appear in white and are shown for context. For a multi-line comment, side represents whether the last line of the comment range is a deletion or addition. For more information, see \"<a href=\"https://help.github.com/en/articles/about-comparing-branches-in-pull-requests#diff-view-options\">Diff view options</a>\" in the GitHub Help documentation.</p>",
+                "description": "<p><strong>Required with <code>comfort-fade</code> preview unless using <code>in_reply_to</code></strong>. In a split diff view, the side of the diff that the pull request's changes appear on. Can be <code>LEFT</code> or <code>RIGHT</code>. Use <code>LEFT</code> for deletions that appear in red. Use <code>RIGHT</code> for additions that appear in green or unchanged lines that appear in white and are shown for context. For a multi-line comment, side represents whether the last line of the comment range is a deletion or addition. For more information, see \"<a href=\"https://help.github.com/en/articles/about-comparing-branches-in-pull-requests#diff-view-options\">Diff view options</a>\" in the GitHub Help documentation.</p>",
                 "enum": [
                   "LEFT",
                   "RIGHT"
@@ -71301,30 +71301,30 @@
                 "name": "side",
                 "in": "body",
                 "rawType": "string",
-                "rawDescription": "In a split diff view, the side of the diff that the pull request's changes appear on. Can be `LEFT` or `RIGHT`. Use `LEFT` for deletions that appear in red. Use `RIGHT` for additions that appear in green or unchanged lines that appear in white and are shown for context. For a multi-line comment, side represents whether the last line of the comment range is a deletion or addition. For more information, see \"[Diff view options](https://help.github.com/en/articles/about-comparing-branches-in-pull-requests#diff-view-options)\" in the GitHub Help documentation.",
+                "rawDescription": "**Required with `comfort-fade` preview unless using `in_reply_to`**. In a split diff view, the side of the diff that the pull request's changes appear on. Can be `LEFT` or `RIGHT`. Use `LEFT` for deletions that appear in red. Use `RIGHT` for additions that appear in green or unchanged lines that appear in white and are shown for context. For a multi-line comment, side represents whether the last line of the comment range is a deletion or addition. For more information, see \"[Diff view options](https://help.github.com/en/articles/about-comparing-branches-in-pull-requests#diff-view-options)\" in the GitHub Help documentation.",
                 "childParamsGroups": []
               },
               "line": {
                 "type": "integer",
-                "description": "<p>The line of the blob in the pull request diff that the comment applies to. For a multi-line comment, the last line of the range that your comment applies to.</p>",
+                "description": "<p><strong>Required with <code>comfort-fade</code> preview unless using <code>in_reply_to</code></strong>. The line of the blob in the pull request diff that the comment applies to. For a multi-line comment, the last line of the range that your comment applies to.</p>",
                 "name": "line",
                 "in": "body",
                 "rawType": "integer",
-                "rawDescription": "The line of the blob in the pull request diff that the comment applies to. For a multi-line comment, the last line of the range that your comment applies to.",
+                "rawDescription": "**Required with `comfort-fade` preview unless using `in_reply_to`**. The line of the blob in the pull request diff that the comment applies to. For a multi-line comment, the last line of the range that your comment applies to.",
                 "childParamsGroups": []
               },
               "start_line": {
                 "type": "integer",
-                "description": "<p><strong>Required when using multi-line comments</strong>. The <code>start_line</code> is the first line in the pull request diff that your multi-line comment applies to. To learn more about multi-line comments, see \"<a href=\"https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request\">Commenting on a pull request</a>\" in the GitHub Help documentation.</p>",
+                "description": "<p><strong>Required when using multi-line comments unless using <code>in_reply_to</code></strong>. To create multi-line comments, you must use the <code>comfort-fade</code> preview header. The <code>start_line</code> is the first line in the pull request diff that your multi-line comment applies to. To learn more about multi-line comments, see \"<a href=\"https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request\">Commenting on a pull request</a>\" in the GitHub Help documentation.</p>",
                 "name": "start_line",
                 "in": "body",
                 "rawType": "integer",
-                "rawDescription": "**Required when using multi-line comments**. The `start_line` is the first line in the pull request diff that your multi-line comment applies to. To learn more about multi-line comments, see \"[Commenting on a pull request](https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request)\" in the GitHub Help documentation.",
+                "rawDescription": "**Required when using multi-line comments unless using `in_reply_to`**. To create multi-line comments, you must use the `comfort-fade` preview header. The `start_line` is the first line in the pull request diff that your multi-line comment applies to. To learn more about multi-line comments, see \"[Commenting on a pull request](https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request)\" in the GitHub Help documentation.",
                 "childParamsGroups": []
               },
               "start_side": {
                 "type": "string",
-                "description": "<p><strong>Required when using multi-line comments</strong>. The <code>start_side</code> is the starting side of the diff that the comment applies to. Can be <code>LEFT</code> or <code>RIGHT</code>. To learn more about multi-line comments, see \"<a href=\"https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request\">Commenting on a pull request</a>\" in the GitHub Help documentation. See <code>side</code> in this table for additional context.</p>",
+                "description": "<p><strong>Required when using multi-line comments unless using <code>in_reply_to</code></strong>. To create multi-line comments, you must use the <code>comfort-fade</code> preview header. The <code>start_side</code> is the starting side of the diff that the comment applies to. Can be <code>LEFT</code> or <code>RIGHT</code>. To learn more about multi-line comments, see \"<a href=\"https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request\">Commenting on a pull request</a>\" in the GitHub Help documentation. See <code>side</code> in this table for additional context.</p>",
                 "enum": [
                   "LEFT",
                   "RIGHT",
@@ -71333,16 +71333,17 @@
                 "name": "start_side",
                 "in": "body",
                 "rawType": "string",
-                "rawDescription": "**Required when using multi-line comments**. The `start_side` is the starting side of the diff that the comment applies to. Can be `LEFT` or `RIGHT`. To learn more about multi-line comments, see \"[Commenting on a pull request](https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request)\" in the GitHub Help documentation. See `side` in this table for additional context.",
+                "rawDescription": "**Required when using multi-line comments unless using `in_reply_to`**. To create multi-line comments, you must use the `comfort-fade` preview header. The `start_side` is the starting side of the diff that the comment applies to. Can be `LEFT` or `RIGHT`. To learn more about multi-line comments, see \"[Commenting on a pull request](https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request)\" in the GitHub Help documentation. See `side` in this table for additional context.",
                 "childParamsGroups": []
               },
               "in_reply_to": {
                 "type": "integer",
                 "example": 2,
+                "description": "<p>The ID of the review comment to reply to. To find the ID of a review comment with <a href=\"#list-review-comments-on-a-pull-request\">\"List review comments on a pull request\"</a>. When specified, all parameters other than <code>body</code> in the request body are ignored.</p>",
                 "name": "in_reply_to",
                 "in": "body",
                 "rawType": "integer",
-                "description": "",
+                "rawDescription": "The ID of the review comment to reply to. To find the ID of a review comment with [\"List review comments on a pull request\"](#list-review-comments-on-a-pull-request). When specified, all parameters other than `body` in the request body are ignored.",
                 "childParamsGroups": []
               }
             },
@@ -71422,16 +71423,16 @@
       },
       {
         "type": "integer",
-        "description": "<p>The position in the diff where you want to add a review comment. Note this value is not the same as the line number in the file. For help finding the position value, read the note above.</p>",
+        "description": "<p><strong>Required without <code>comfort-fade</code> preview unless using <code>in_reply_to</code></strong>. The position in the diff where you want to add a review comment. Note this value is not the same as the line number in the file. For help finding the position value, read the note above.</p>",
         "name": "position",
         "in": "body",
         "rawType": "integer",
-        "rawDescription": "The position in the diff where you want to add a review comment. Note this value is not the same as the line number in the file. For help finding the position value, read the note above.",
+        "rawDescription": "**Required without `comfort-fade` preview unless using `in_reply_to`**. The position in the diff where you want to add a review comment. Note this value is not the same as the line number in the file. For help finding the position value, read the note above.",
         "childParamsGroups": []
       },
       {
         "type": "string",
-        "description": "<p>In a split diff view, the side of the diff that the pull request's changes appear on. Can be <code>LEFT</code> or <code>RIGHT</code>. Use <code>LEFT</code> for deletions that appear in red. Use <code>RIGHT</code> for additions that appear in green or unchanged lines that appear in white and are shown for context. For a multi-line comment, side represents whether the last line of the comment range is a deletion or addition. For more information, see \"<a href=\"https://help.github.com/en/articles/about-comparing-branches-in-pull-requests#diff-view-options\">Diff view options</a>\" in the GitHub Help documentation.</p>",
+        "description": "<p><strong>Required with <code>comfort-fade</code> preview unless using <code>in_reply_to</code></strong>. In a split diff view, the side of the diff that the pull request's changes appear on. Can be <code>LEFT</code> or <code>RIGHT</code>. Use <code>LEFT</code> for deletions that appear in red. Use <code>RIGHT</code> for additions that appear in green or unchanged lines that appear in white and are shown for context. For a multi-line comment, side represents whether the last line of the comment range is a deletion or addition. For more information, see \"<a href=\"https://help.github.com/en/articles/about-comparing-branches-in-pull-requests#diff-view-options\">Diff view options</a>\" in the GitHub Help documentation.</p>",
         "enum": [
           "LEFT",
           "RIGHT"
@@ -71439,30 +71440,30 @@
         "name": "side",
         "in": "body",
         "rawType": "string",
-        "rawDescription": "In a split diff view, the side of the diff that the pull request's changes appear on. Can be `LEFT` or `RIGHT`. Use `LEFT` for deletions that appear in red. Use `RIGHT` for additions that appear in green or unchanged lines that appear in white and are shown for context. For a multi-line comment, side represents whether the last line of the comment range is a deletion or addition. For more information, see \"[Diff view options](https://help.github.com/en/articles/about-comparing-branches-in-pull-requests#diff-view-options)\" in the GitHub Help documentation.",
+        "rawDescription": "**Required with `comfort-fade` preview unless using `in_reply_to`**. In a split diff view, the side of the diff that the pull request's changes appear on. Can be `LEFT` or `RIGHT`. Use `LEFT` for deletions that appear in red. Use `RIGHT` for additions that appear in green or unchanged lines that appear in white and are shown for context. For a multi-line comment, side represents whether the last line of the comment range is a deletion or addition. For more information, see \"[Diff view options](https://help.github.com/en/articles/about-comparing-branches-in-pull-requests#diff-view-options)\" in the GitHub Help documentation.",
         "childParamsGroups": []
       },
       {
         "type": "integer",
-        "description": "<p>The line of the blob in the pull request diff that the comment applies to. For a multi-line comment, the last line of the range that your comment applies to.</p>",
+        "description": "<p><strong>Required with <code>comfort-fade</code> preview unless using <code>in_reply_to</code></strong>. The line of the blob in the pull request diff that the comment applies to. For a multi-line comment, the last line of the range that your comment applies to.</p>",
         "name": "line",
         "in": "body",
         "rawType": "integer",
-        "rawDescription": "The line of the blob in the pull request diff that the comment applies to. For a multi-line comment, the last line of the range that your comment applies to.",
+        "rawDescription": "**Required with `comfort-fade` preview unless using `in_reply_to`**. The line of the blob in the pull request diff that the comment applies to. For a multi-line comment, the last line of the range that your comment applies to.",
         "childParamsGroups": []
       },
       {
         "type": "integer",
-        "description": "<p><strong>Required when using multi-line comments</strong>. The <code>start_line</code> is the first line in the pull request diff that your multi-line comment applies to. To learn more about multi-line comments, see \"<a href=\"https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request\">Commenting on a pull request</a>\" in the GitHub Help documentation.</p>",
+        "description": "<p><strong>Required when using multi-line comments unless using <code>in_reply_to</code></strong>. To create multi-line comments, you must use the <code>comfort-fade</code> preview header. The <code>start_line</code> is the first line in the pull request diff that your multi-line comment applies to. To learn more about multi-line comments, see \"<a href=\"https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request\">Commenting on a pull request</a>\" in the GitHub Help documentation.</p>",
         "name": "start_line",
         "in": "body",
         "rawType": "integer",
-        "rawDescription": "**Required when using multi-line comments**. The `start_line` is the first line in the pull request diff that your multi-line comment applies to. To learn more about multi-line comments, see \"[Commenting on a pull request](https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request)\" in the GitHub Help documentation.",
+        "rawDescription": "**Required when using multi-line comments unless using `in_reply_to`**. To create multi-line comments, you must use the `comfort-fade` preview header. The `start_line` is the first line in the pull request diff that your multi-line comment applies to. To learn more about multi-line comments, see \"[Commenting on a pull request](https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request)\" in the GitHub Help documentation.",
         "childParamsGroups": []
       },
       {
         "type": "string",
-        "description": "<p><strong>Required when using multi-line comments</strong>. The <code>start_side</code> is the starting side of the diff that the comment applies to. Can be <code>LEFT</code> or <code>RIGHT</code>. To learn more about multi-line comments, see \"<a href=\"https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request\">Commenting on a pull request</a>\" in the GitHub Help documentation. See <code>side</code> in this table for additional context.</p>",
+        "description": "<p><strong>Required when using multi-line comments unless using <code>in_reply_to</code></strong>. To create multi-line comments, you must use the <code>comfort-fade</code> preview header. The <code>start_side</code> is the starting side of the diff that the comment applies to. Can be <code>LEFT</code> or <code>RIGHT</code>. To learn more about multi-line comments, see \"<a href=\"https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request\">Commenting on a pull request</a>\" in the GitHub Help documentation. See <code>side</code> in this table for additional context.</p>",
         "enum": [
           "LEFT",
           "RIGHT",
@@ -71471,16 +71472,17 @@
         "name": "start_side",
         "in": "body",
         "rawType": "string",
-        "rawDescription": "**Required when using multi-line comments**. The `start_side` is the starting side of the diff that the comment applies to. Can be `LEFT` or `RIGHT`. To learn more about multi-line comments, see \"[Commenting on a pull request](https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request)\" in the GitHub Help documentation. See `side` in this table for additional context.",
+        "rawDescription": "**Required when using multi-line comments unless using `in_reply_to`**. To create multi-line comments, you must use the `comfort-fade` preview header. The `start_side` is the starting side of the diff that the comment applies to. Can be `LEFT` or `RIGHT`. To learn more about multi-line comments, see \"[Commenting on a pull request](https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request)\" in the GitHub Help documentation. See `side` in this table for additional context.",
         "childParamsGroups": []
       },
       {
         "type": "integer",
         "example": 2,
+        "description": "<p>The ID of the review comment to reply to. To find the ID of a review comment with <a href=\"#list-review-comments-on-a-pull-request\">\"List review comments on a pull request\"</a>. When specified, all parameters other than <code>body</code> in the request body are ignored.</p>",
         "name": "in_reply_to",
         "in": "body",
         "rawType": "integer",
-        "description": "",
+        "rawDescription": "The ID of the review comment to reply to. To find the ID of a review comment with [\"List review comments on a pull request\"](#list-review-comments-on-a-pull-request). When specified, all parameters other than `body` in the request body are ignored.",
         "childParamsGroups": []
       }
     ],
diff --git a/lib/rest/static/decorated/ghes-3.0.json b/lib/rest/static/decorated/ghes-3.0.json
index 3295960a88..5429953469 100644
--- a/lib/rest/static/decorated/ghes-3.0.json
+++ b/lib/rest/static/decorated/ghes-3.0.json
@@ -66293,10 +66293,11 @@
               "in_reply_to": {
                 "type": "integer",
                 "example": 2,
+                "description": "<p>The ID of the review comment to reply to. To find the ID of a review comment with <a href=\"#list-review-comments-on-a-pull-request\">\"List review comments on a pull request\"</a>. When specified, all parameters other than <code>body</code> in the request body are ignored.</p>",
                 "name": "in_reply_to",
                 "in": "body",
                 "rawType": "integer",
-                "description": "",
+                "rawDescription": "The ID of the review comment to reply to. To find the ID of a review comment with [\"List review comments on a pull request\"](#list-review-comments-on-a-pull-request). When specified, all parameters other than `body` in the request body are ignored.",
                 "childParamsGroups": []
               }
             },
@@ -66439,10 +66440,11 @@
       {
         "type": "integer",
         "example": 2,
+        "description": "<p>The ID of the review comment to reply to. To find the ID of a review comment with <a href=\"#list-review-comments-on-a-pull-request\">\"List review comments on a pull request\"</a>. When specified, all parameters other than <code>body</code> in the request body are ignored.</p>",
         "name": "in_reply_to",
         "in": "body",
         "rawType": "integer",
-        "description": "",
+        "rawDescription": "The ID of the review comment to reply to. To find the ID of a review comment with [\"List review comments on a pull request\"](#list-review-comments-on-a-pull-request). When specified, all parameters other than `body` in the request body are ignored.",
         "childParamsGroups": []
       }
     ],
diff --git a/lib/rest/static/decorated/ghes-3.1.json b/lib/rest/static/decorated/ghes-3.1.json
index d9b0dd5f17..46d7ff1ba4 100644
--- a/lib/rest/static/decorated/ghes-3.1.json
+++ b/lib/rest/static/decorated/ghes-3.1.json
@@ -66962,10 +66962,11 @@
               "in_reply_to": {
                 "type": "integer",
                 "example": 2,
+                "description": "<p>The ID of the review comment to reply to. To find the ID of a review comment with <a href=\"#list-review-comments-on-a-pull-request\">\"List review comments on a pull request\"</a>. When specified, all parameters other than <code>body</code> in the request body are ignored.</p>",
                 "name": "in_reply_to",
                 "in": "body",
                 "rawType": "integer",
-                "description": "",
+                "rawDescription": "The ID of the review comment to reply to. To find the ID of a review comment with [\"List review comments on a pull request\"](#list-review-comments-on-a-pull-request). When specified, all parameters other than `body` in the request body are ignored.",
                 "childParamsGroups": []
               }
             },
@@ -67108,10 +67109,11 @@
       {
         "type": "integer",
         "example": 2,
+        "description": "<p>The ID of the review comment to reply to. To find the ID of a review comment with <a href=\"#list-review-comments-on-a-pull-request\">\"List review comments on a pull request\"</a>. When specified, all parameters other than <code>body</code> in the request body are ignored.</p>",
         "name": "in_reply_to",
         "in": "body",
         "rawType": "integer",
-        "description": "",
+        "rawDescription": "The ID of the review comment to reply to. To find the ID of a review comment with [\"List review comments on a pull request\"](#list-review-comments-on-a-pull-request). When specified, all parameters other than `body` in the request body are ignored.",
         "childParamsGroups": []
       }
     ],
diff --git a/lib/rest/static/decorated/ghes-3.2.json b/lib/rest/static/decorated/ghes-3.2.json
index 301943fc91..538c870767 100644
--- a/lib/rest/static/decorated/ghes-3.2.json
+++ b/lib/rest/static/decorated/ghes-3.2.json
@@ -69137,10 +69137,11 @@
               "in_reply_to": {
                 "type": "integer",
                 "example": 2,
+                "description": "<p>The ID of the review comment to reply to. To find the ID of a review comment with <a href=\"#list-review-comments-on-a-pull-request\">\"List review comments on a pull request\"</a>. When specified, all parameters other than <code>body</code> in the request body are ignored.</p>",
                 "name": "in_reply_to",
                 "in": "body",
                 "rawType": "integer",
-                "description": "",
+                "rawDescription": "The ID of the review comment to reply to. To find the ID of a review comment with [\"List review comments on a pull request\"](#list-review-comments-on-a-pull-request). When specified, all parameters other than `body` in the request body are ignored.",
                 "childParamsGroups": []
               }
             },
@@ -69283,10 +69284,11 @@
       {
         "type": "integer",
         "example": 2,
+        "description": "<p>The ID of the review comment to reply to. To find the ID of a review comment with <a href=\"#list-review-comments-on-a-pull-request\">\"List review comments on a pull request\"</a>. When specified, all parameters other than <code>body</code> in the request body are ignored.</p>",
         "name": "in_reply_to",
         "in": "body",
         "rawType": "integer",
-        "description": "",
+        "rawDescription": "The ID of the review comment to reply to. To find the ID of a review comment with [\"List review comments on a pull request\"](#list-review-comments-on-a-pull-request). When specified, all parameters other than `body` in the request body are ignored.",
         "childParamsGroups": []
       }
     ],
diff --git a/lib/rest/static/decorated/ghes-3.3.json b/lib/rest/static/decorated/ghes-3.3.json
index 072e2db219..129e0b1979 100644
--- a/lib/rest/static/decorated/ghes-3.3.json
+++ b/lib/rest/static/decorated/ghes-3.3.json
@@ -69233,16 +69233,16 @@
               },
               "position": {
                 "type": "integer",
-                "description": "<p>The position in the diff where you want to add a review comment. Note this value is not the same as the line number in the file. For help finding the position value, read the note above.</p>",
+                "description": "<p><strong>Required without <code>comfort-fade</code> preview unless using <code>in_reply_to</code></strong>. The position in the diff where you want to add a review comment. Note this value is not the same as the line number in the file. For help finding the position value, read the note above.</p>",
                 "name": "position",
                 "in": "body",
                 "rawType": "integer",
-                "rawDescription": "The position in the diff where you want to add a review comment. Note this value is not the same as the line number in the file. For help finding the position value, read the note above.",
+                "rawDescription": "**Required without `comfort-fade` preview unless using `in_reply_to`**. The position in the diff where you want to add a review comment. Note this value is not the same as the line number in the file. For help finding the position value, read the note above.",
                 "childParamsGroups": []
               },
               "side": {
                 "type": "string",
-                "description": "<p>In a split diff view, the side of the diff that the pull request's changes appear on. Can be <code>LEFT</code> or <code>RIGHT</code>. Use <code>LEFT</code> for deletions that appear in red. Use <code>RIGHT</code> for additions that appear in green or unchanged lines that appear in white and are shown for context. For a multi-line comment, side represents whether the last line of the comment range is a deletion or addition. For more information, see \"<a href=\"https://help.github.com/en/articles/about-comparing-branches-in-pull-requests#diff-view-options\">Diff view options</a>\" in the GitHub Help documentation.</p>",
+                "description": "<p><strong>Required with <code>comfort-fade</code> preview unless using <code>in_reply_to</code></strong>. In a split diff view, the side of the diff that the pull request's changes appear on. Can be <code>LEFT</code> or <code>RIGHT</code>. Use <code>LEFT</code> for deletions that appear in red. Use <code>RIGHT</code> for additions that appear in green or unchanged lines that appear in white and are shown for context. For a multi-line comment, side represents whether the last line of the comment range is a deletion or addition. For more information, see \"<a href=\"https://help.github.com/en/articles/about-comparing-branches-in-pull-requests#diff-view-options\">Diff view options</a>\" in the GitHub Help documentation.</p>",
                 "enum": [
                   "LEFT",
                   "RIGHT"
@@ -69250,30 +69250,30 @@
                 "name": "side",
                 "in": "body",
                 "rawType": "string",
-                "rawDescription": "In a split diff view, the side of the diff that the pull request's changes appear on. Can be `LEFT` or `RIGHT`. Use `LEFT` for deletions that appear in red. Use `RIGHT` for additions that appear in green or unchanged lines that appear in white and are shown for context. For a multi-line comment, side represents whether the last line of the comment range is a deletion or addition. For more information, see \"[Diff view options](https://help.github.com/en/articles/about-comparing-branches-in-pull-requests#diff-view-options)\" in the GitHub Help documentation.",
+                "rawDescription": "**Required with `comfort-fade` preview unless using `in_reply_to`**. In a split diff view, the side of the diff that the pull request's changes appear on. Can be `LEFT` or `RIGHT`. Use `LEFT` for deletions that appear in red. Use `RIGHT` for additions that appear in green or unchanged lines that appear in white and are shown for context. For a multi-line comment, side represents whether the last line of the comment range is a deletion or addition. For more information, see \"[Diff view options](https://help.github.com/en/articles/about-comparing-branches-in-pull-requests#diff-view-options)\" in the GitHub Help documentation.",
                 "childParamsGroups": []
               },
               "line": {
                 "type": "integer",
-                "description": "<p>The line of the blob in the pull request diff that the comment applies to. For a multi-line comment, the last line of the range that your comment applies to.</p>",
+                "description": "<p><strong>Required with <code>comfort-fade</code> preview unless using <code>in_reply_to</code></strong>. The line of the blob in the pull request diff that the comment applies to. For a multi-line comment, the last line of the range that your comment applies to.</p>",
                 "name": "line",
                 "in": "body",
                 "rawType": "integer",
-                "rawDescription": "The line of the blob in the pull request diff that the comment applies to. For a multi-line comment, the last line of the range that your comment applies to.",
+                "rawDescription": "**Required with `comfort-fade` preview unless using `in_reply_to`**. The line of the blob in the pull request diff that the comment applies to. For a multi-line comment, the last line of the range that your comment applies to.",
                 "childParamsGroups": []
               },
               "start_line": {
                 "type": "integer",
-                "description": "<p><strong>Required when using multi-line comments</strong>. The <code>start_line</code> is the first line in the pull request diff that your multi-line comment applies to. To learn more about multi-line comments, see \"<a href=\"https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request\">Commenting on a pull request</a>\" in the GitHub Help documentation.</p>",
+                "description": "<p><strong>Required when using multi-line comments unless using <code>in_reply_to</code></strong>. To create multi-line comments, you must use the <code>comfort-fade</code> preview header. The <code>start_line</code> is the first line in the pull request diff that your multi-line comment applies to. To learn more about multi-line comments, see \"<a href=\"https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request\">Commenting on a pull request</a>\" in the GitHub Help documentation.</p>",
                 "name": "start_line",
                 "in": "body",
                 "rawType": "integer",
-                "rawDescription": "**Required when using multi-line comments**. The `start_line` is the first line in the pull request diff that your multi-line comment applies to. To learn more about multi-line comments, see \"[Commenting on a pull request](https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request)\" in the GitHub Help documentation.",
+                "rawDescription": "**Required when using multi-line comments unless using `in_reply_to`**. To create multi-line comments, you must use the `comfort-fade` preview header. The `start_line` is the first line in the pull request diff that your multi-line comment applies to. To learn more about multi-line comments, see \"[Commenting on a pull request](https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request)\" in the GitHub Help documentation.",
                 "childParamsGroups": []
               },
               "start_side": {
                 "type": "string",
-                "description": "<p><strong>Required when using multi-line comments</strong>. The <code>start_side</code> is the starting side of the diff that the comment applies to. Can be <code>LEFT</code> or <code>RIGHT</code>. To learn more about multi-line comments, see \"<a href=\"https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request\">Commenting on a pull request</a>\" in the GitHub Help documentation. See <code>side</code> in this table for additional context.</p>",
+                "description": "<p><strong>Required when using multi-line comments unless using <code>in_reply_to</code></strong>. To create multi-line comments, you must use the <code>comfort-fade</code> preview header. The <code>start_side</code> is the starting side of the diff that the comment applies to. Can be <code>LEFT</code> or <code>RIGHT</code>. To learn more about multi-line comments, see \"<a href=\"https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request\">Commenting on a pull request</a>\" in the GitHub Help documentation. See <code>side</code> in this table for additional context.</p>",
                 "enum": [
                   "LEFT",
                   "RIGHT",
@@ -69282,16 +69282,17 @@
                 "name": "start_side",
                 "in": "body",
                 "rawType": "string",
-                "rawDescription": "**Required when using multi-line comments**. The `start_side` is the starting side of the diff that the comment applies to. Can be `LEFT` or `RIGHT`. To learn more about multi-line comments, see \"[Commenting on a pull request](https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request)\" in the GitHub Help documentation. See `side` in this table for additional context.",
+                "rawDescription": "**Required when using multi-line comments unless using `in_reply_to`**. To create multi-line comments, you must use the `comfort-fade` preview header. The `start_side` is the starting side of the diff that the comment applies to. Can be `LEFT` or `RIGHT`. To learn more about multi-line comments, see \"[Commenting on a pull request](https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request)\" in the GitHub Help documentation. See `side` in this table for additional context.",
                 "childParamsGroups": []
               },
               "in_reply_to": {
                 "type": "integer",
                 "example": 2,
+                "description": "<p>The ID of the review comment to reply to. To find the ID of a review comment with <a href=\"#list-review-comments-on-a-pull-request\">\"List review comments on a pull request\"</a>. When specified, all parameters other than <code>body</code> in the request body are ignored.</p>",
                 "name": "in_reply_to",
                 "in": "body",
                 "rawType": "integer",
-                "description": "",
+                "rawDescription": "The ID of the review comment to reply to. To find the ID of a review comment with [\"List review comments on a pull request\"](#list-review-comments-on-a-pull-request). When specified, all parameters other than `body` in the request body are ignored.",
                 "childParamsGroups": []
               }
             },
@@ -69371,16 +69372,16 @@
       },
       {
         "type": "integer",
-        "description": "<p>The position in the diff where you want to add a review comment. Note this value is not the same as the line number in the file. For help finding the position value, read the note above.</p>",
+        "description": "<p><strong>Required without <code>comfort-fade</code> preview unless using <code>in_reply_to</code></strong>. The position in the diff where you want to add a review comment. Note this value is not the same as the line number in the file. For help finding the position value, read the note above.</p>",
         "name": "position",
         "in": "body",
         "rawType": "integer",
-        "rawDescription": "The position in the diff where you want to add a review comment. Note this value is not the same as the line number in the file. For help finding the position value, read the note above.",
+        "rawDescription": "**Required without `comfort-fade` preview unless using `in_reply_to`**. The position in the diff where you want to add a review comment. Note this value is not the same as the line number in the file. For help finding the position value, read the note above.",
         "childParamsGroups": []
       },
       {
         "type": "string",
-        "description": "<p>In a split diff view, the side of the diff that the pull request's changes appear on. Can be <code>LEFT</code> or <code>RIGHT</code>. Use <code>LEFT</code> for deletions that appear in red. Use <code>RIGHT</code> for additions that appear in green or unchanged lines that appear in white and are shown for context. For a multi-line comment, side represents whether the last line of the comment range is a deletion or addition. For more information, see \"<a href=\"https://help.github.com/en/articles/about-comparing-branches-in-pull-requests#diff-view-options\">Diff view options</a>\" in the GitHub Help documentation.</p>",
+        "description": "<p><strong>Required with <code>comfort-fade</code> preview unless using <code>in_reply_to</code></strong>. In a split diff view, the side of the diff that the pull request's changes appear on. Can be <code>LEFT</code> or <code>RIGHT</code>. Use <code>LEFT</code> for deletions that appear in red. Use <code>RIGHT</code> for additions that appear in green or unchanged lines that appear in white and are shown for context. For a multi-line comment, side represents whether the last line of the comment range is a deletion or addition. For more information, see \"<a href=\"https://help.github.com/en/articles/about-comparing-branches-in-pull-requests#diff-view-options\">Diff view options</a>\" in the GitHub Help documentation.</p>",
         "enum": [
           "LEFT",
           "RIGHT"
@@ -69388,30 +69389,30 @@
         "name": "side",
         "in": "body",
         "rawType": "string",
-        "rawDescription": "In a split diff view, the side of the diff that the pull request's changes appear on. Can be `LEFT` or `RIGHT`. Use `LEFT` for deletions that appear in red. Use `RIGHT` for additions that appear in green or unchanged lines that appear in white and are shown for context. For a multi-line comment, side represents whether the last line of the comment range is a deletion or addition. For more information, see \"[Diff view options](https://help.github.com/en/articles/about-comparing-branches-in-pull-requests#diff-view-options)\" in the GitHub Help documentation.",
+        "rawDescription": "**Required with `comfort-fade` preview unless using `in_reply_to`**. In a split diff view, the side of the diff that the pull request's changes appear on. Can be `LEFT` or `RIGHT`. Use `LEFT` for deletions that appear in red. Use `RIGHT` for additions that appear in green or unchanged lines that appear in white and are shown for context. For a multi-line comment, side represents whether the last line of the comment range is a deletion or addition. For more information, see \"[Diff view options](https://help.github.com/en/articles/about-comparing-branches-in-pull-requests#diff-view-options)\" in the GitHub Help documentation.",
         "childParamsGroups": []
       },
       {
         "type": "integer",
-        "description": "<p>The line of the blob in the pull request diff that the comment applies to. For a multi-line comment, the last line of the range that your comment applies to.</p>",
+        "description": "<p><strong>Required with <code>comfort-fade</code> preview unless using <code>in_reply_to</code></strong>. The line of the blob in the pull request diff that the comment applies to. For a multi-line comment, the last line of the range that your comment applies to.</p>",
         "name": "line",
         "in": "body",
         "rawType": "integer",
-        "rawDescription": "The line of the blob in the pull request diff that the comment applies to. For a multi-line comment, the last line of the range that your comment applies to.",
+        "rawDescription": "**Required with `comfort-fade` preview unless using `in_reply_to`**. The line of the blob in the pull request diff that the comment applies to. For a multi-line comment, the last line of the range that your comment applies to.",
         "childParamsGroups": []
       },
       {
         "type": "integer",
-        "description": "<p><strong>Required when using multi-line comments</strong>. The <code>start_line</code> is the first line in the pull request diff that your multi-line comment applies to. To learn more about multi-line comments, see \"<a href=\"https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request\">Commenting on a pull request</a>\" in the GitHub Help documentation.</p>",
+        "description": "<p><strong>Required when using multi-line comments unless using <code>in_reply_to</code></strong>. To create multi-line comments, you must use the <code>comfort-fade</code> preview header. The <code>start_line</code> is the first line in the pull request diff that your multi-line comment applies to. To learn more about multi-line comments, see \"<a href=\"https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request\">Commenting on a pull request</a>\" in the GitHub Help documentation.</p>",
         "name": "start_line",
         "in": "body",
         "rawType": "integer",
-        "rawDescription": "**Required when using multi-line comments**. The `start_line` is the first line in the pull request diff that your multi-line comment applies to. To learn more about multi-line comments, see \"[Commenting on a pull request](https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request)\" in the GitHub Help documentation.",
+        "rawDescription": "**Required when using multi-line comments unless using `in_reply_to`**. To create multi-line comments, you must use the `comfort-fade` preview header. The `start_line` is the first line in the pull request diff that your multi-line comment applies to. To learn more about multi-line comments, see \"[Commenting on a pull request](https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request)\" in the GitHub Help documentation.",
         "childParamsGroups": []
       },
       {
         "type": "string",
-        "description": "<p><strong>Required when using multi-line comments</strong>. The <code>start_side</code> is the starting side of the diff that the comment applies to. Can be <code>LEFT</code> or <code>RIGHT</code>. To learn more about multi-line comments, see \"<a href=\"https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request\">Commenting on a pull request</a>\" in the GitHub Help documentation. See <code>side</code> in this table for additional context.</p>",
+        "description": "<p><strong>Required when using multi-line comments unless using <code>in_reply_to</code></strong>. To create multi-line comments, you must use the <code>comfort-fade</code> preview header. The <code>start_side</code> is the starting side of the diff that the comment applies to. Can be <code>LEFT</code> or <code>RIGHT</code>. To learn more about multi-line comments, see \"<a href=\"https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request\">Commenting on a pull request</a>\" in the GitHub Help documentation. See <code>side</code> in this table for additional context.</p>",
         "enum": [
           "LEFT",
           "RIGHT",
@@ -69420,16 +69421,17 @@
         "name": "start_side",
         "in": "body",
         "rawType": "string",
-        "rawDescription": "**Required when using multi-line comments**. The `start_side` is the starting side of the diff that the comment applies to. Can be `LEFT` or `RIGHT`. To learn more about multi-line comments, see \"[Commenting on a pull request](https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request)\" in the GitHub Help documentation. See `side` in this table for additional context.",
+        "rawDescription": "**Required when using multi-line comments unless using `in_reply_to`**. To create multi-line comments, you must use the `comfort-fade` preview header. The `start_side` is the starting side of the diff that the comment applies to. Can be `LEFT` or `RIGHT`. To learn more about multi-line comments, see \"[Commenting on a pull request](https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request)\" in the GitHub Help documentation. See `side` in this table for additional context.",
         "childParamsGroups": []
       },
       {
         "type": "integer",
         "example": 2,
+        "description": "<p>The ID of the review comment to reply to. To find the ID of a review comment with <a href=\"#list-review-comments-on-a-pull-request\">\"List review comments on a pull request\"</a>. When specified, all parameters other than <code>body</code> in the request body are ignored.</p>",
         "name": "in_reply_to",
         "in": "body",
         "rawType": "integer",
-        "description": "",
+        "rawDescription": "The ID of the review comment to reply to. To find the ID of a review comment with [\"List review comments on a pull request\"](#list-review-comments-on-a-pull-request). When specified, all parameters other than `body` in the request body are ignored.",
         "childParamsGroups": []
       }
     ],
diff --git a/lib/rest/static/decorated/github.ae.json b/lib/rest/static/decorated/github.ae.json
index 29018f2e39..ed777f9bfd 100644
--- a/lib/rest/static/decorated/github.ae.json
+++ b/lib/rest/static/decorated/github.ae.json
@@ -59622,16 +59622,16 @@
               },
               "position": {
                 "type": "integer",
-                "description": "<p>The position in the diff where you want to add a review comment. Note this value is not the same as the line number in the file. For help finding the position value, read the note above.</p>",
+                "description": "<p><strong>Required without <code>comfort-fade</code> preview unless using <code>in_reply_to</code></strong>. The position in the diff where you want to add a review comment. Note this value is not the same as the line number in the file. For help finding the position value, read the note above.</p>",
                 "name": "position",
                 "in": "body",
                 "rawType": "integer",
-                "rawDescription": "The position in the diff where you want to add a review comment. Note this value is not the same as the line number in the file. For help finding the position value, read the note above.",
+                "rawDescription": "**Required without `comfort-fade` preview unless using `in_reply_to`**. The position in the diff where you want to add a review comment. Note this value is not the same as the line number in the file. For help finding the position value, read the note above.",
                 "childParamsGroups": []
               },
               "side": {
                 "type": "string",
-                "description": "<p>In a split diff view, the side of the diff that the pull request's changes appear on. Can be <code>LEFT</code> or <code>RIGHT</code>. Use <code>LEFT</code> for deletions that appear in red. Use <code>RIGHT</code> for additions that appear in green or unchanged lines that appear in white and are shown for context. For a multi-line comment, side represents whether the last line of the comment range is a deletion or addition. For more information, see \"<a href=\"https://help.github.com/en/articles/about-comparing-branches-in-pull-requests#diff-view-options\">Diff view options</a>\" in the GitHub Help documentation.</p>",
+                "description": "<p><strong>Required with <code>comfort-fade</code> preview unless using <code>in_reply_to</code></strong>. In a split diff view, the side of the diff that the pull request's changes appear on. Can be <code>LEFT</code> or <code>RIGHT</code>. Use <code>LEFT</code> for deletions that appear in red. Use <code>RIGHT</code> for additions that appear in green or unchanged lines that appear in white and are shown for context. For a multi-line comment, side represents whether the last line of the comment range is a deletion or addition. For more information, see \"<a href=\"https://help.github.com/en/articles/about-comparing-branches-in-pull-requests#diff-view-options\">Diff view options</a>\" in the GitHub Help documentation.</p>",
                 "enum": [
                   "LEFT",
                   "RIGHT"
@@ -59639,30 +59639,30 @@
                 "name": "side",
                 "in": "body",
                 "rawType": "string",
-                "rawDescription": "In a split diff view, the side of the diff that the pull request's changes appear on. Can be `LEFT` or `RIGHT`. Use `LEFT` for deletions that appear in red. Use `RIGHT` for additions that appear in green or unchanged lines that appear in white and are shown for context. For a multi-line comment, side represents whether the last line of the comment range is a deletion or addition. For more information, see \"[Diff view options](https://help.github.com/en/articles/about-comparing-branches-in-pull-requests#diff-view-options)\" in the GitHub Help documentation.",
+                "rawDescription": "**Required with `comfort-fade` preview unless using `in_reply_to`**. In a split diff view, the side of the diff that the pull request's changes appear on. Can be `LEFT` or `RIGHT`. Use `LEFT` for deletions that appear in red. Use `RIGHT` for additions that appear in green or unchanged lines that appear in white and are shown for context. For a multi-line comment, side represents whether the last line of the comment range is a deletion or addition. For more information, see \"[Diff view options](https://help.github.com/en/articles/about-comparing-branches-in-pull-requests#diff-view-options)\" in the GitHub Help documentation.",
                 "childParamsGroups": []
               },
               "line": {
                 "type": "integer",
-                "description": "<p>The line of the blob in the pull request diff that the comment applies to. For a multi-line comment, the last line of the range that your comment applies to.</p>",
+                "description": "<p><strong>Required with <code>comfort-fade</code> preview unless using <code>in_reply_to</code></strong>. The line of the blob in the pull request diff that the comment applies to. For a multi-line comment, the last line of the range that your comment applies to.</p>",
                 "name": "line",
                 "in": "body",
                 "rawType": "integer",
-                "rawDescription": "The line of the blob in the pull request diff that the comment applies to. For a multi-line comment, the last line of the range that your comment applies to.",
+                "rawDescription": "**Required with `comfort-fade` preview unless using `in_reply_to`**. The line of the blob in the pull request diff that the comment applies to. For a multi-line comment, the last line of the range that your comment applies to.",
                 "childParamsGroups": []
               },
               "start_line": {
                 "type": "integer",
-                "description": "<p><strong>Required when using multi-line comments</strong>. The <code>start_line</code> is the first line in the pull request diff that your multi-line comment applies to. To learn more about multi-line comments, see \"<a href=\"https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request\">Commenting on a pull request</a>\" in the GitHub Help documentation.</p>",
+                "description": "<p><strong>Required when using multi-line comments unless using <code>in_reply_to</code></strong>. To create multi-line comments, you must use the <code>comfort-fade</code> preview header. The <code>start_line</code> is the first line in the pull request diff that your multi-line comment applies to. To learn more about multi-line comments, see \"<a href=\"https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request\">Commenting on a pull request</a>\" in the GitHub Help documentation.</p>",
                 "name": "start_line",
                 "in": "body",
                 "rawType": "integer",
-                "rawDescription": "**Required when using multi-line comments**. The `start_line` is the first line in the pull request diff that your multi-line comment applies to. To learn more about multi-line comments, see \"[Commenting on a pull request](https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request)\" in the GitHub Help documentation.",
+                "rawDescription": "**Required when using multi-line comments unless using `in_reply_to`**. To create multi-line comments, you must use the `comfort-fade` preview header. The `start_line` is the first line in the pull request diff that your multi-line comment applies to. To learn more about multi-line comments, see \"[Commenting on a pull request](https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request)\" in the GitHub Help documentation.",
                 "childParamsGroups": []
               },
               "start_side": {
                 "type": "string",
-                "description": "<p><strong>Required when using multi-line comments</strong>. The <code>start_side</code> is the starting side of the diff that the comment applies to. Can be <code>LEFT</code> or <code>RIGHT</code>. To learn more about multi-line comments, see \"<a href=\"https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request\">Commenting on a pull request</a>\" in the GitHub Help documentation. See <code>side</code> in this table for additional context.</p>",
+                "description": "<p><strong>Required when using multi-line comments unless using <code>in_reply_to</code></strong>. To create multi-line comments, you must use the <code>comfort-fade</code> preview header. The <code>start_side</code> is the starting side of the diff that the comment applies to. Can be <code>LEFT</code> or <code>RIGHT</code>. To learn more about multi-line comments, see \"<a href=\"https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request\">Commenting on a pull request</a>\" in the GitHub Help documentation. See <code>side</code> in this table for additional context.</p>",
                 "enum": [
                   "LEFT",
                   "RIGHT",
@@ -59671,16 +59671,17 @@
                 "name": "start_side",
                 "in": "body",
                 "rawType": "string",
-                "rawDescription": "**Required when using multi-line comments**. The `start_side` is the starting side of the diff that the comment applies to. Can be `LEFT` or `RIGHT`. To learn more about multi-line comments, see \"[Commenting on a pull request](https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request)\" in the GitHub Help documentation. See `side` in this table for additional context.",
+                "rawDescription": "**Required when using multi-line comments unless using `in_reply_to`**. To create multi-line comments, you must use the `comfort-fade` preview header. The `start_side` is the starting side of the diff that the comment applies to. Can be `LEFT` or `RIGHT`. To learn more about multi-line comments, see \"[Commenting on a pull request](https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request)\" in the GitHub Help documentation. See `side` in this table for additional context.",
                 "childParamsGroups": []
               },
               "in_reply_to": {
                 "type": "integer",
                 "example": 2,
+                "description": "<p>The ID of the review comment to reply to. To find the ID of a review comment with <a href=\"#list-review-comments-on-a-pull-request\">\"List review comments on a pull request\"</a>. When specified, all parameters other than <code>body</code> in the request body are ignored.</p>",
                 "name": "in_reply_to",
                 "in": "body",
                 "rawType": "integer",
-                "description": "",
+                "rawDescription": "The ID of the review comment to reply to. To find the ID of a review comment with [\"List review comments on a pull request\"](#list-review-comments-on-a-pull-request). When specified, all parameters other than `body` in the request body are ignored.",
                 "childParamsGroups": []
               }
             },
@@ -59760,16 +59761,16 @@
       },
       {
         "type": "integer",
-        "description": "<p>The position in the diff where you want to add a review comment. Note this value is not the same as the line number in the file. For help finding the position value, read the note above.</p>",
+        "description": "<p><strong>Required without <code>comfort-fade</code> preview unless using <code>in_reply_to</code></strong>. The position in the diff where you want to add a review comment. Note this value is not the same as the line number in the file. For help finding the position value, read the note above.</p>",
         "name": "position",
         "in": "body",
         "rawType": "integer",
-        "rawDescription": "The position in the diff where you want to add a review comment. Note this value is not the same as the line number in the file. For help finding the position value, read the note above.",
+        "rawDescription": "**Required without `comfort-fade` preview unless using `in_reply_to`**. The position in the diff where you want to add a review comment. Note this value is not the same as the line number in the file. For help finding the position value, read the note above.",
         "childParamsGroups": []
       },
       {
         "type": "string",
-        "description": "<p>In a split diff view, the side of the diff that the pull request's changes appear on. Can be <code>LEFT</code> or <code>RIGHT</code>. Use <code>LEFT</code> for deletions that appear in red. Use <code>RIGHT</code> for additions that appear in green or unchanged lines that appear in white and are shown for context. For a multi-line comment, side represents whether the last line of the comment range is a deletion or addition. For more information, see \"<a href=\"https://help.github.com/en/articles/about-comparing-branches-in-pull-requests#diff-view-options\">Diff view options</a>\" in the GitHub Help documentation.</p>",
+        "description": "<p><strong>Required with <code>comfort-fade</code> preview unless using <code>in_reply_to</code></strong>. In a split diff view, the side of the diff that the pull request's changes appear on. Can be <code>LEFT</code> or <code>RIGHT</code>. Use <code>LEFT</code> for deletions that appear in red. Use <code>RIGHT</code> for additions that appear in green or unchanged lines that appear in white and are shown for context. For a multi-line comment, side represents whether the last line of the comment range is a deletion or addition. For more information, see \"<a href=\"https://help.github.com/en/articles/about-comparing-branches-in-pull-requests#diff-view-options\">Diff view options</a>\" in the GitHub Help documentation.</p>",
         "enum": [
           "LEFT",
           "RIGHT"
@@ -59777,30 +59778,30 @@
         "name": "side",
         "in": "body",
         "rawType": "string",
-        "rawDescription": "In a split diff view, the side of the diff that the pull request's changes appear on. Can be `LEFT` or `RIGHT`. Use `LEFT` for deletions that appear in red. Use `RIGHT` for additions that appear in green or unchanged lines that appear in white and are shown for context. For a multi-line comment, side represents whether the last line of the comment range is a deletion or addition. For more information, see \"[Diff view options](https://help.github.com/en/articles/about-comparing-branches-in-pull-requests#diff-view-options)\" in the GitHub Help documentation.",
+        "rawDescription": "**Required with `comfort-fade` preview unless using `in_reply_to`**. In a split diff view, the side of the diff that the pull request's changes appear on. Can be `LEFT` or `RIGHT`. Use `LEFT` for deletions that appear in red. Use `RIGHT` for additions that appear in green or unchanged lines that appear in white and are shown for context. For a multi-line comment, side represents whether the last line of the comment range is a deletion or addition. For more information, see \"[Diff view options](https://help.github.com/en/articles/about-comparing-branches-in-pull-requests#diff-view-options)\" in the GitHub Help documentation.",
         "childParamsGroups": []
       },
       {
         "type": "integer",
-        "description": "<p>The line of the blob in the pull request diff that the comment applies to. For a multi-line comment, the last line of the range that your comment applies to.</p>",
+        "description": "<p><strong>Required with <code>comfort-fade</code> preview unless using <code>in_reply_to</code></strong>. The line of the blob in the pull request diff that the comment applies to. For a multi-line comment, the last line of the range that your comment applies to.</p>",
         "name": "line",
         "in": "body",
         "rawType": "integer",
-        "rawDescription": "The line of the blob in the pull request diff that the comment applies to. For a multi-line comment, the last line of the range that your comment applies to.",
+        "rawDescription": "**Required with `comfort-fade` preview unless using `in_reply_to`**. The line of the blob in the pull request diff that the comment applies to. For a multi-line comment, the last line of the range that your comment applies to.",
         "childParamsGroups": []
       },
       {
         "type": "integer",
-        "description": "<p><strong>Required when using multi-line comments</strong>. The <code>start_line</code> is the first line in the pull request diff that your multi-line comment applies to. To learn more about multi-line comments, see \"<a href=\"https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request\">Commenting on a pull request</a>\" in the GitHub Help documentation.</p>",
+        "description": "<p><strong>Required when using multi-line comments unless using <code>in_reply_to</code></strong>. To create multi-line comments, you must use the <code>comfort-fade</code> preview header. The <code>start_line</code> is the first line in the pull request diff that your multi-line comment applies to. To learn more about multi-line comments, see \"<a href=\"https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request\">Commenting on a pull request</a>\" in the GitHub Help documentation.</p>",
         "name": "start_line",
         "in": "body",
         "rawType": "integer",
-        "rawDescription": "**Required when using multi-line comments**. The `start_line` is the first line in the pull request diff that your multi-line comment applies to. To learn more about multi-line comments, see \"[Commenting on a pull request](https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request)\" in the GitHub Help documentation.",
+        "rawDescription": "**Required when using multi-line comments unless using `in_reply_to`**. To create multi-line comments, you must use the `comfort-fade` preview header. The `start_line` is the first line in the pull request diff that your multi-line comment applies to. To learn more about multi-line comments, see \"[Commenting on a pull request](https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request)\" in the GitHub Help documentation.",
         "childParamsGroups": []
       },
       {
         "type": "string",
-        "description": "<p><strong>Required when using multi-line comments</strong>. The <code>start_side</code> is the starting side of the diff that the comment applies to. Can be <code>LEFT</code> or <code>RIGHT</code>. To learn more about multi-line comments, see \"<a href=\"https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request\">Commenting on a pull request</a>\" in the GitHub Help documentation. See <code>side</code> in this table for additional context.</p>",
+        "description": "<p><strong>Required when using multi-line comments unless using <code>in_reply_to</code></strong>. To create multi-line comments, you must use the <code>comfort-fade</code> preview header. The <code>start_side</code> is the starting side of the diff that the comment applies to. Can be <code>LEFT</code> or <code>RIGHT</code>. To learn more about multi-line comments, see \"<a href=\"https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request\">Commenting on a pull request</a>\" in the GitHub Help documentation. See <code>side</code> in this table for additional context.</p>",
         "enum": [
           "LEFT",
           "RIGHT",
@@ -59809,16 +59810,17 @@
         "name": "start_side",
         "in": "body",
         "rawType": "string",
-        "rawDescription": "**Required when using multi-line comments**. The `start_side` is the starting side of the diff that the comment applies to. Can be `LEFT` or `RIGHT`. To learn more about multi-line comments, see \"[Commenting on a pull request](https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request)\" in the GitHub Help documentation. See `side` in this table for additional context.",
+        "rawDescription": "**Required when using multi-line comments unless using `in_reply_to`**. To create multi-line comments, you must use the `comfort-fade` preview header. The `start_side` is the starting side of the diff that the comment applies to. Can be `LEFT` or `RIGHT`. To learn more about multi-line comments, see \"[Commenting on a pull request](https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request)\" in the GitHub Help documentation. See `side` in this table for additional context.",
         "childParamsGroups": []
       },
       {
         "type": "integer",
         "example": 2,
+        "description": "<p>The ID of the review comment to reply to. To find the ID of a review comment with <a href=\"#list-review-comments-on-a-pull-request\">\"List review comments on a pull request\"</a>. When specified, all parameters other than <code>body</code> in the request body are ignored.</p>",
         "name": "in_reply_to",
         "in": "body",
         "rawType": "integer",
-        "description": "",
+        "rawDescription": "The ID of the review comment to reply to. To find the ID of a review comment with [\"List review comments on a pull request\"](#list-review-comments-on-a-pull-request). When specified, all parameters other than `body` in the request body are ignored.",
         "childParamsGroups": []
       }
     ],
diff --git a/lib/rest/static/dereferenced/api.github.com.deref.json b/lib/rest/static/dereferenced/api.github.com.deref.json
index beb27bf748..843aafb98d 100644
--- a/lib/rest/static/dereferenced/api.github.com.deref.json
+++ b/lib/rest/static/dereferenced/api.github.com.deref.json
@@ -323159,11 +323159,11 @@
                   },
                   "position": {
                     "type": "integer",
-                    "description": "The position in the diff where you want to add a review comment. Note this value is not the same as the line number in the file. For help finding the position value, read the note above."
+                    "description": "**Required without `comfort-fade` preview unless using `in_reply_to`**. The position in the diff where you want to add a review comment. Note this value is not the same as the line number in the file. For help finding the position value, read the note above."
                   },
                   "side": {
                     "type": "string",
-                    "description": "In a split diff view, the side of the diff that the pull request's changes appear on. Can be `LEFT` or `RIGHT`. Use `LEFT` for deletions that appear in red. Use `RIGHT` for additions that appear in green or unchanged lines that appear in white and are shown for context. For a multi-line comment, side represents whether the last line of the comment range is a deletion or addition. For more information, see \"[Diff view options](https://help.github.com/en/articles/about-comparing-branches-in-pull-requests#diff-view-options)\" in the GitHub Help documentation.",
+                    "description": "**Required with `comfort-fade` preview unless using `in_reply_to`**. In a split diff view, the side of the diff that the pull request's changes appear on. Can be `LEFT` or `RIGHT`. Use `LEFT` for deletions that appear in red. Use `RIGHT` for additions that appear in green or unchanged lines that appear in white and are shown for context. For a multi-line comment, side represents whether the last line of the comment range is a deletion or addition. For more information, see \"[Diff view options](https://help.github.com/en/articles/about-comparing-branches-in-pull-requests#diff-view-options)\" in the GitHub Help documentation.",
                     "enum": [
                       "LEFT",
                       "RIGHT"
@@ -323171,15 +323171,15 @@
                   },
                   "line": {
                     "type": "integer",
-                    "description": "The line of the blob in the pull request diff that the comment applies to. For a multi-line comment, the last line of the range that your comment applies to."
+                    "description": "**Required with `comfort-fade` preview unless using `in_reply_to`**. The line of the blob in the pull request diff that the comment applies to. For a multi-line comment, the last line of the range that your comment applies to."
                   },
                   "start_line": {
                     "type": "integer",
-                    "description": "**Required when using multi-line comments**. The `start_line` is the first line in the pull request diff that your multi-line comment applies to. To learn more about multi-line comments, see \"[Commenting on a pull request](https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request)\" in the GitHub Help documentation."
+                    "description": "**Required when using multi-line comments unless using `in_reply_to`**. To create multi-line comments, you must use the `comfort-fade` preview header. The `start_line` is the first line in the pull request diff that your multi-line comment applies to. To learn more about multi-line comments, see \"[Commenting on a pull request](https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request)\" in the GitHub Help documentation."
                   },
                   "start_side": {
                     "type": "string",
-                    "description": "**Required when using multi-line comments**. The `start_side` is the starting side of the diff that the comment applies to. Can be `LEFT` or `RIGHT`. To learn more about multi-line comments, see \"[Commenting on a pull request](https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request)\" in the GitHub Help documentation. See `side` in this table for additional context.",
+                    "description": "**Required when using multi-line comments unless using `in_reply_to`**. To create multi-line comments, you must use the `comfort-fade` preview header. The `start_side` is the starting side of the diff that the comment applies to. Can be `LEFT` or `RIGHT`. To learn more about multi-line comments, see \"[Commenting on a pull request](https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request)\" in the GitHub Help documentation. See `side` in this table for additional context.",
                     "enum": [
                       "LEFT",
                       "RIGHT",
@@ -323188,7 +323188,8 @@
                   },
                   "in_reply_to": {
                     "type": "integer",
-                    "example": 2
+                    "example": 2,
+                    "description": "The ID of the review comment to reply to. To find the ID of a review comment with [\"List review comments on a pull request\"](#list-review-comments-on-a-pull-request). When specified, all parameters other than `body` in the request body are ignored."
                   }
                 },
                 "required": [
diff --git a/lib/rest/static/dereferenced/ghes-3.0.deref.json b/lib/rest/static/dereferenced/ghes-3.0.deref.json
index 910004e34f..1450436f9f 100644
--- a/lib/rest/static/dereferenced/ghes-3.0.deref.json
+++ b/lib/rest/static/dereferenced/ghes-3.0.deref.json
@@ -280279,7 +280279,8 @@
                   },
                   "in_reply_to": {
                     "type": "integer",
-                    "example": 2
+                    "example": 2,
+                    "description": "The ID of the review comment to reply to. To find the ID of a review comment with [\"List review comments on a pull request\"](#list-review-comments-on-a-pull-request). When specified, all parameters other than `body` in the request body are ignored."
                   }
                 },
                 "required": [
diff --git a/lib/rest/static/dereferenced/ghes-3.1.deref.json b/lib/rest/static/dereferenced/ghes-3.1.deref.json
index e7f7b01880..860bc8a3fa 100644
--- a/lib/rest/static/dereferenced/ghes-3.1.deref.json
+++ b/lib/rest/static/dereferenced/ghes-3.1.deref.json
@@ -283875,7 +283875,8 @@
                   },
                   "in_reply_to": {
                     "type": "integer",
-                    "example": 2
+                    "example": 2,
+                    "description": "The ID of the review comment to reply to. To find the ID of a review comment with [\"List review comments on a pull request\"](#list-review-comments-on-a-pull-request). When specified, all parameters other than `body` in the request body are ignored."
                   }
                 },
                 "required": [
diff --git a/lib/rest/static/dereferenced/ghes-3.2.deref.json b/lib/rest/static/dereferenced/ghes-3.2.deref.json
index 72744d3804..c457a6f95f 100644
--- a/lib/rest/static/dereferenced/ghes-3.2.deref.json
+++ b/lib/rest/static/dereferenced/ghes-3.2.deref.json
@@ -290644,7 +290644,8 @@
                   },
                   "in_reply_to": {
                     "type": "integer",
-                    "example": 2
+                    "example": 2,
+                    "description": "The ID of the review comment to reply to. To find the ID of a review comment with [\"List review comments on a pull request\"](#list-review-comments-on-a-pull-request). When specified, all parameters other than `body` in the request body are ignored."
                   }
                 },
                 "required": [
diff --git a/lib/rest/static/dereferenced/ghes-3.3.deref.json b/lib/rest/static/dereferenced/ghes-3.3.deref.json
index 4bb4a453b3..3e13287627 100644
--- a/lib/rest/static/dereferenced/ghes-3.3.deref.json
+++ b/lib/rest/static/dereferenced/ghes-3.3.deref.json
@@ -297444,11 +297444,11 @@
                   },
                   "position": {
                     "type": "integer",
-                    "description": "The position in the diff where you want to add a review comment. Note this value is not the same as the line number in the file. For help finding the position value, read the note above."
+                    "description": "**Required without `comfort-fade` preview unless using `in_reply_to`**. The position in the diff where you want to add a review comment. Note this value is not the same as the line number in the file. For help finding the position value, read the note above."
                   },
                   "side": {
                     "type": "string",
-                    "description": "In a split diff view, the side of the diff that the pull request's changes appear on. Can be `LEFT` or `RIGHT`. Use `LEFT` for deletions that appear in red. Use `RIGHT` for additions that appear in green or unchanged lines that appear in white and are shown for context. For a multi-line comment, side represents whether the last line of the comment range is a deletion or addition. For more information, see \"[Diff view options](https://help.github.com/en/articles/about-comparing-branches-in-pull-requests#diff-view-options)\" in the GitHub Help documentation.",
+                    "description": "**Required with `comfort-fade` preview unless using `in_reply_to`**. In a split diff view, the side of the diff that the pull request's changes appear on. Can be `LEFT` or `RIGHT`. Use `LEFT` for deletions that appear in red. Use `RIGHT` for additions that appear in green or unchanged lines that appear in white and are shown for context. For a multi-line comment, side represents whether the last line of the comment range is a deletion or addition. For more information, see \"[Diff view options](https://help.github.com/en/articles/about-comparing-branches-in-pull-requests#diff-view-options)\" in the GitHub Help documentation.",
                     "enum": [
                       "LEFT",
                       "RIGHT"
@@ -297456,15 +297456,15 @@
                   },
                   "line": {
                     "type": "integer",
-                    "description": "The line of the blob in the pull request diff that the comment applies to. For a multi-line comment, the last line of the range that your comment applies to."
+                    "description": "**Required with `comfort-fade` preview unless using `in_reply_to`**. The line of the blob in the pull request diff that the comment applies to. For a multi-line comment, the last line of the range that your comment applies to."
                   },
                   "start_line": {
                     "type": "integer",
-                    "description": "**Required when using multi-line comments**. The `start_line` is the first line in the pull request diff that your multi-line comment applies to. To learn more about multi-line comments, see \"[Commenting on a pull request](https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request)\" in the GitHub Help documentation."
+                    "description": "**Required when using multi-line comments unless using `in_reply_to`**. To create multi-line comments, you must use the `comfort-fade` preview header. The `start_line` is the first line in the pull request diff that your multi-line comment applies to. To learn more about multi-line comments, see \"[Commenting on a pull request](https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request)\" in the GitHub Help documentation."
                   },
                   "start_side": {
                     "type": "string",
-                    "description": "**Required when using multi-line comments**. The `start_side` is the starting side of the diff that the comment applies to. Can be `LEFT` or `RIGHT`. To learn more about multi-line comments, see \"[Commenting on a pull request](https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request)\" in the GitHub Help documentation. See `side` in this table for additional context.",
+                    "description": "**Required when using multi-line comments unless using `in_reply_to`**. To create multi-line comments, you must use the `comfort-fade` preview header. The `start_side` is the starting side of the diff that the comment applies to. Can be `LEFT` or `RIGHT`. To learn more about multi-line comments, see \"[Commenting on a pull request](https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request)\" in the GitHub Help documentation. See `side` in this table for additional context.",
                     "enum": [
                       "LEFT",
                       "RIGHT",
@@ -297473,7 +297473,8 @@
                   },
                   "in_reply_to": {
                     "type": "integer",
-                    "example": 2
+                    "example": 2,
+                    "description": "The ID of the review comment to reply to. To find the ID of a review comment with [\"List review comments on a pull request\"](#list-review-comments-on-a-pull-request). When specified, all parameters other than `body` in the request body are ignored."
                   }
                 },
                 "required": [
diff --git a/lib/rest/static/dereferenced/github.ae.deref.json b/lib/rest/static/dereferenced/github.ae.deref.json
index 960cc6c338..0c517c1dc0 100644
--- a/lib/rest/static/dereferenced/github.ae.deref.json
+++ b/lib/rest/static/dereferenced/github.ae.deref.json
@@ -257436,11 +257436,11 @@
                   },
                   "position": {
                     "type": "integer",
-                    "description": "The position in the diff where you want to add a review comment. Note this value is not the same as the line number in the file. For help finding the position value, read the note above."
+                    "description": "**Required without `comfort-fade` preview unless using `in_reply_to`**. The position in the diff where you want to add a review comment. Note this value is not the same as the line number in the file. For help finding the position value, read the note above."
                   },
                   "side": {
                     "type": "string",
-                    "description": "In a split diff view, the side of the diff that the pull request's changes appear on. Can be `LEFT` or `RIGHT`. Use `LEFT` for deletions that appear in red. Use `RIGHT` for additions that appear in green or unchanged lines that appear in white and are shown for context. For a multi-line comment, side represents whether the last line of the comment range is a deletion or addition. For more information, see \"[Diff view options](https://help.github.com/en/articles/about-comparing-branches-in-pull-requests#diff-view-options)\" in the GitHub Help documentation.",
+                    "description": "**Required with `comfort-fade` preview unless using `in_reply_to`**. In a split diff view, the side of the diff that the pull request's changes appear on. Can be `LEFT` or `RIGHT`. Use `LEFT` for deletions that appear in red. Use `RIGHT` for additions that appear in green or unchanged lines that appear in white and are shown for context. For a multi-line comment, side represents whether the last line of the comment range is a deletion or addition. For more information, see \"[Diff view options](https://help.github.com/en/articles/about-comparing-branches-in-pull-requests#diff-view-options)\" in the GitHub Help documentation.",
                     "enum": [
                       "LEFT",
                       "RIGHT"
@@ -257448,15 +257448,15 @@
                   },
                   "line": {
                     "type": "integer",
-                    "description": "The line of the blob in the pull request diff that the comment applies to. For a multi-line comment, the last line of the range that your comment applies to."
+                    "description": "**Required with `comfort-fade` preview unless using `in_reply_to`**. The line of the blob in the pull request diff that the comment applies to. For a multi-line comment, the last line of the range that your comment applies to."
                   },
                   "start_line": {
                     "type": "integer",
-                    "description": "**Required when using multi-line comments**. The `start_line` is the first line in the pull request diff that your multi-line comment applies to. To learn more about multi-line comments, see \"[Commenting on a pull request](https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request)\" in the GitHub Help documentation."
+                    "description": "**Required when using multi-line comments unless using `in_reply_to`**. To create multi-line comments, you must use the `comfort-fade` preview header. The `start_line` is the first line in the pull request diff that your multi-line comment applies to. To learn more about multi-line comments, see \"[Commenting on a pull request](https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request)\" in the GitHub Help documentation."
                   },
                   "start_side": {
                     "type": "string",
-                    "description": "**Required when using multi-line comments**. The `start_side` is the starting side of the diff that the comment applies to. Can be `LEFT` or `RIGHT`. To learn more about multi-line comments, see \"[Commenting on a pull request](https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request)\" in the GitHub Help documentation. See `side` in this table for additional context.",
+                    "description": "**Required when using multi-line comments unless using `in_reply_to`**. To create multi-line comments, you must use the `comfort-fade` preview header. The `start_side` is the starting side of the diff that the comment applies to. Can be `LEFT` or `RIGHT`. To learn more about multi-line comments, see \"[Commenting on a pull request](https://help.github.com/en/articles/commenting-on-a-pull-request#adding-line-comments-to-a-pull-request)\" in the GitHub Help documentation. See `side` in this table for additional context.",
                     "enum": [
                       "LEFT",
                       "RIGHT",
@@ -257465,7 +257465,8 @@
                   },
                   "in_reply_to": {
                     "type": "integer",
-                    "example": 2
+                    "example": 2,
+                    "description": "The ID of the review comment to reply to. To find the ID of a review comment with [\"List review comments on a pull request\"](#list-review-comments-on-a-pull-request). When specified, all parameters other than `body` in the request body are ignored."
                   }
                 },
                 "required": [