diff --git a/baselines/dom.generated.d.ts b/baselines/dom.generated.d.ts
index 9869cd768..ea1015b38 100644
--- a/baselines/dom.generated.d.ts
+++ b/baselines/dom.generated.d.ts
@@ -6428,12 +6428,9 @@ interface HTMLBodyElement extends HTMLElement, WindowEventHandlers {
     background: string;
     /** @deprecated */
     bgColor: string;
-    bgProperties: string;
     /** @deprecated */
     link: string;
     /** @deprecated */
-    noWrap: boolean;
-    /** @deprecated */
     onorientationchange: ((this: HTMLBodyElement, ev: Event) => any) | null;
     /** @deprecated */
     text: string;
diff --git a/inputfiles/addedTypes.json b/inputfiles/addedTypes.json
index cfad7b550..c612bc495 100644
--- a/inputfiles/addedTypes.json
+++ b/inputfiles/addedTypes.json
@@ -1129,6 +1129,13 @@
                     }
                 ]
             },
+            "HTMLBodyElement": {
+                "element": [
+                    {
+                        "name": "body"
+                    }
+                ]
+            },
             "HTMLBRElement": {
                 "element": [
                     {
@@ -1313,6 +1320,28 @@
                     }
                 ]
             },
+            "HTMLHeadingElement": {
+                "element": [
+                    {
+                        "name": "h1"
+                    },
+                    {
+                        "name": "h2"
+                    },
+                    {
+                        "name": "h3"
+                    },
+                    {
+                        "name": "h4"
+                    },
+                    {
+                        "name": "h5"
+                    },
+                    {
+                        "name": "h6"
+                    }
+                ]
+            },
             "HTMLHRElement": {
                 "element": [
                     {
diff --git a/inputfiles/idl/HTML - Sections.widl b/inputfiles/idl/HTML - Sections.widl
new file mode 100644
index 000000000..b7fcb1f94
--- /dev/null
+++ b/inputfiles/idl/HTML - Sections.widl	
@@ -0,0 +1,11 @@
+[Exposed=Window]
+interface HTMLBodyElement : HTMLElement {
+  [HTMLConstructor] constructor();
+};
+
+HTMLBodyElement includes WindowEventHandlers;
+
+[Exposed=Window]
+interface HTMLHeadingElement : HTMLElement {
+  [HTMLConstructor] constructor();
+};
diff --git a/inputfiles/idlSources.json b/inputfiles/idlSources.json
index e754e0ce8..876d52514 100644
--- a/inputfiles/idlSources.json
+++ b/inputfiles/idlSources.json
@@ -286,6 +286,10 @@
         "url": "https://html.spec.whatwg.org/multipage/scripting.html",
         "title": "HTML - Scripting"
     },
+    {
+        "url": "https://html.spec.whatwg.org/multipage/sections.html",
+        "title": "HTML - Sections"
+    },
     {
         "url": "https://html.spec.whatwg.org/multipage/semantics.html",
         "title": "HTML - Semantics"
diff --git a/inputfiles/removedTypes.json b/inputfiles/removedTypes.json
index f2503bb34..d1407af4e 100644
--- a/inputfiles/removedTypes.json
+++ b/inputfiles/removedTypes.json
@@ -166,18 +166,6 @@
             "FederatedCredential": null,
             "FormDataEvent": null,
             "HTMLAreasCollection": null,
-            "HTMLBodyElement": {
-                "properties": {
-                    "property": {
-                        "onblur": null,
-                        "onerror": null,
-                        "onfocus": null,
-                        "onload": null,
-                        "onresize": null,
-                        "onscroll": null
-                    }
-                }
-            },
             "HTMLFormElement": {
                 "properties": {
                     "property": {