Move concepts up above the table that references them.

Author: janewman

source

@@ -90137,10 +90137,17 @@ dictionary <dfn dictionary>DragEventInit</dfn> : <span>MouseEventInit</span> {
   elements. When applied to an element, it enables directional arrow key navigation among its
   focusable descendants, forming a <dfn>focus group</dfn>.</p>
 
-  <p>The attribute's value is a string of space-separated tokens. The first token must be a
-  <dfn>behavior token</dfn>, which defines the primary interaction pattern. Subsequent tokens are
-  optional <dfn>modifier tokens</dfn>. The exception is the <code>none</code> token, which must be used
-  alone.</p>
+  <p>The attribute's value is a string of space-separated tokens. For most focusgroups, the first token must be a
+  <dfn>behavior token</dfn>, which defines the primary interaction pattern, and subsequent tokens are
+  optional <dfn>modifier tokens</dfn>. The special token <code>none</code> is used alone to opt out of focusgroup behavior.</p>
+
+  <h5>Concepts</h5>
+
+  <p>A <dfn>focusgroup owner</dfn> is an element with a valid <code data-x="attr-focusgroup">focusgroup</code> attribute specified, where the attribute value contains a <span data-x="behavior token">behavior token</span> (not <code data-x="attr-focusgroup-none">none</code>).</p>
+
+  <p>The <dfn>focusgroup scope</dfn> of a focusgroup owner is the owner itself and all of its <span>shadow-inclusive descendants</span>, excluding any descendants that are themselves focusgroup owners or have opted out with <code data-x="attr-focusgroup-none">focusgroup="none"</code>.</p>
+
+  <p>A <dfn>focusgroup item</dfn> is any <span>focusable</span> element within the focusgroup scope.</p>
 
   <table>
    <thead>
@@ -90191,18 +90198,10 @@ dictionary <dfn dictionary>DragEventInit</dfn> : <span>MouseEventInit</span> {
      <td>Disables the "last focused item" memory when re-entering the focus group.
     <tr>
      <td><dfn data-x="attr-focusgroup-none"><code>none</code></dfn>
-     <td>Behavior
-     <td>Opts the element and its descendants out of any ancestor focus group.
+     <td>Special
+     <td>Opts the element and its descendants out of any ancestor focus group. Must be used alone.
   </table>
 
-  <h5>Concepts</h5>
-
-  <p>A <dfn>focusgroup owner</dfn> is an element with the <code data-x="attr-focusgroup">focusgroup</code> attribute specified.</p>
-
-  <p>The <dfn>focusgroup scope</dfn> of a focusgroup owner is the owner itself and all of its <span>shadow-inclusive descendants</span>, excluding any descendants that are themselves focusgroup owners or have opted out with <code data-x="attr-focusgroup-none">focusgroup="none"</code>.</p>
-
-  <p>A <dfn>focusgroup item</dfn> is any <span>focusable</span> element within the focusgroup scope.</p>
-
   <h5>ARIA Role Inference</h5>
 
   <p>When a <span data-x="behavior token">behavior token</span> is used, the user agent may infer a corresponding ARIA role for the <span data-x="focusgroup owner">focusgroup owner</span> and its <span data-x="focusgroup item">items</span>. This inference must only occur if the element would otherwise have a generic role (such as a <code>div</code> or <code>span</code>) and does not have an explicit <code data-x="attr-aria-role">role</code> attribute.</p>