Formatting and clarity.

Author: janewman

source

@@ -90141,15 +90141,16 @@ 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. 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>
+  <p>The attribute's value is a string of space-separated tokens. The first token must either be a
+  <dfn>behavior token</dfn>, which defines the primary interaction pattern, or the special token
+  <code>none</code> which is used alone to opt out of focusgroup behavior. If a behavior token is
+  specified, <dfn>modifier tokens</dfn> can be provided subsequently.</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>The <dfn>focusgroup scope</dfn> of a focusgroup owner is the owner itself and all of its <span>shadow-including 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>
 
@@ -90312,7 +90313,7 @@ dictionary <dfn dictionary>DragEventInit</dfn> : <span>MouseEventInit</span> {
 
     <li><p>Let <var>items</var> be all <span data-x="focusgroup item">focusgroup items</span> in <span>tree order</span>.</p></li>
 
-    <li><p>Determine the <var>nextItem</var> by finding the geometrically nearest item in the direction of the arrow key, respecting the <var>owner</var>'s <span>writing mode</span> and <span>direction</span>:</p>
+    <li><p>Determine the <var>nextItem</var> by finding the geometrically nearest item in the direction of the arrow key, respecting the <var>owner</var>'s <span>'writing-mode'</span> and <span>'direction'</span>:</p>
      <ul class="brief">
       <li>If the <code data-x="attr-focusgroup-inline">inline</code> token is present, only consider items on the inline axis.</li>
       <li>If the <code data-x="attr-focusgroup-block">block</code> token is present, only consider items on the block axis.</li>