Reword a couple definitions and add a note

source

@@ -79853,16 +79853,20 @@ dictionary <dfn dictionary>ToggleEventInit</dfn> : <span>EventInit</span> {
   the case with <span data-x="reading-flow-ordered focus navigation scope">reading-flow-ordered focus
   navigation scopes</span>.</p>
 
-  <p>A <dfn>reading-flow-ordered focus navigation scope</dfn> is a <span>tabindex-ordered focus
-  navigation scope</span> whose <span>focus navigation scope owner</span> is a
-  <span>reading-flow-ordered scope owner</span>.</p>
+  <p class="note">The <span>tabindex value</span> rules do not give a precise ordering, as they are
+  composed mostly of "<!--non-normative-->should" statements and relative orderings.</p>
 
-  <p>The order within a <span>reading-flow-ordered focus navigation scope</span> is determined by
-  the <span>reading flow order</span> only. Each element's <span>tabindex value</span> is used to
-  determine whether the element is focusable, but it does not affect the order within the scope.</p>
+  <p>Every <span>reading-flow-ordered scope owner</span>'s <span>tabindex-ordered focus navigation
+  scope</span> is specifically a <dfn>reading-flow-ordered focus navigation scope</dfn>. The order
+  within a <span>reading-flow-ordered focus navigation scope</span> is determined by the
+  <span>reading flow order</span> algorithm; the use of <span>tabindex value</span> only determines
+  an item's focusability, but does not affect order within the scope.</p>
 
-  <p class="note">The rules there do not give a precise ordering, as they are composed mostly of
-  "<!--non-normative-->should" statements and relative orderings.</p>
+  <p class="note">The <span>tabindex-ordered focus navigation scope</span> of a <span>reading flow
+  item</span> — and any other <span>focus navigation scope owner</span> for that matter — is not
+  specifically a <span>reading-flow-ordered focus navigation scope</span>; it is a normal
+  <span>tabindex-ordered focus navigation scope</span> whose order is determined by <span>tabindex
+  value</span> as usual.</p>
 
   <p>A <dfn>flattened tabindex-ordered focus navigation scope</dfn> is a list of <span
   data-x="focusable area">focusable areas</span>. Every <span>focus navigation scope owner</span>
@@ -80092,7 +80096,7 @@ dictionary <dfn dictionary>ToggleEventInit</dfn> : <span>EventInit</span> {
 
   <div w-nodev>
 
-  <h4>The reading flow</h4>
+  <h4>Reading flow</h4>
 
   <p>A <dfn>reading-flow-ordered scope owner</dfn> is either: <ref>CSSDISPLAY</ref></p>
 
@@ -80142,10 +80146,10 @@ dictionary <dfn dictionary>ToggleEventInit</dfn> : <span>EventInit</span> {
          <li><p><span>Break</span>.</p></li>
         </ol>
 
-        <p class="note"> Different <var>item</var>s can have the same <span>inclusive ancestor</span>.
-        Only add to <var>output</var> if it is not already in the <span>reading flow order</span>. This
-        loop stops when the <span>inclusive ancestor</span> of <var>item</var> within the <span>flat
-        tree</span> is in the <var>scope</var>.</p>
+        <p class="note">Different <var>item</var>s can have the same <span>inclusive
+        ancestor</span>. Only add to <var>output</var> if it is not already in the <span>reading
+        flow order</span>. This loop stops when the <span>inclusive ancestor</span> of
+        <var>item</var> within the <span>flat tree</span> is in the <var>scope</var>.</p>
        </li>
 
        <li><p>Set <var>item</var> to the parent element of <var>item</var> within the <span>flat