diff --git a/source b/source
index 4cb27728921..5063398d273 100644
--- a/source
+++ b/source
@@ -3236,6 +3236,7 @@ a.setAttribute('href', 'https://example.com/'); // change the content attribute
      <li>The <dfn data-x-href="https://dom.spec.whatwg.org/#concept-tree-child" data-x="concept-tree-child">child</dfn> concept</li>
      <li>The <dfn data-x-href="https://dom.spec.whatwg.org/#concept-tree-root">root</dfn> and <dfn data-x-href="https://dom.spec.whatwg.org/#concept-shadow-including-root">shadow-including root</dfn> concepts</li>
      <li>The <dfn data-x-href="https://dom.spec.whatwg.org/#concept-tree-inclusive-ancestor">inclusive ancestor</dfn>,
+             <dfn data-x-href="https://dom.spec.whatwg.org/#concept-tree-ancestor">ancestor</dfn>,
              <dfn data-x-href="https://dom.spec.whatwg.org/#concept-tree-descendant">descendant</dfn>,
              <dfn data-x="concept-shadow-including-ancestor" data-x-href="https://dom.spec.whatwg.org/#concept-shadow-including-ancestor">shadow-including ancestor</dfn>,
              <dfn data-x-href="https://dom.spec.whatwg.org/#concept-shadow-including-descendant">shadow-including descendant</dfn>,
@@ -80025,8 +80026,8 @@ dictionary <dfn dictionary>ToggleEventInit</dfn> : <span>EventInit</span> {
     regardless.</p>
    </dd>
 
-   <dt>If the value is a zero or if the value is a greater than zero and the element is a <span>reading
-   flow item</span></dt>
+   <dt>If the value is either a zero, or</dt>
+   <dt>If the value is greater than zero and the element is a <span>reading flow item</span></dt>
 
    <dd>
     <p>The user agent must allow the element to be considered as a <span>focusable area</span> and
@@ -80162,14 +80163,13 @@ dictionary <dfn dictionary>ToggleEventInit</dfn> : <span>EventInit</span> {
     </ol>
 
     <p class="note">The <span>rendering-defined sibling reading flow</span> of <var>container</var>
-    includes <span data-x="descendant">descendants</span> of this <span>reading flow
-    container</span> that might not be in <var>scope</var>. For example, if a direct child of
-    <var>container</var> has CSS 'display: contents' and its nested children are included in
-    <var>items</var>. Some elements in <var>items</var> will have the <var>container</var> while
-    others will have 'display: contents' child as its <span>associated focus navigation
-    owner</span>. This step traverses the <span data-x="inclusive ancestor">inclusive
-    ancestors</span> of <var>item</var> within the <span>flat tree</span> to make sure we only
-    include an element in the <span>reading flow order</span> if it is in <var>scope</var>.</p>
+    includes <span data-x="descendant">descendants</span> of this <span>reading flow container</span>
+    that might not be in <var>scope</var>. For example, if a direct child of <var>container</var> has
+    CSS 'display: contents' and its nested children are included in <var>items</var>. Some elements in
+    <var>items</var> will have the <var>container</var> while others will have 'display: contents' child
+    as its <span>associated focus navigation owner</span>. This step traverses the <span
+    data-x="ancestor">ancestors</span> of <var>item</var> within the <span>flat tree</span> to make sure
+    we only include an element in the <span>reading flow order</span> if it is in <var>scope</var>.</p>
    </li>
 
    <li>