Update focus another option

source

@@ -53863,51 +53863,16 @@ interface <dfn interface>HTMLSelectElement</dfn> : <span>HTMLElement</span> {
   prevent the picker from opening. Otherwise, the picker is opened.</p>
 
   <p>If the <code>select</code> is being rendered as a <span>drop-down box</span> with <span>base
-  appearance</span>, then the user agent should allow the user to <dfn
-  data-x="select-focus-next-option">focus the next option</dfn> and <dfn
-  data-x="select-focus-previous-option">focus the previous option</dfn>. Performing either of these
-  actions will fire a corresponding <code data-x="event-keydown">keydown</code> event on the
-  currently focused <code>option</code> element. Calling <code
-  data-x="dom-Event-preventDefault">preventDefault()</code> on this event will prevent the
-  corresponding algorithm from running.</p>
-
-  <p>To <span data-x="select-focus-next-option">focus the next option</span> given a currently
-  focused <code>option</code> element <var>option</var> in a <code>select</code> element
-  <var>select</var>:</p>
-
-  <ol>
-   <li>
-    <p><span>While</span> <var>option</var> is not null:</p>
-
-    <ol>
-     <li><p>Set <var>option</var> to the next element in <var>select</var>'s <span
-     data-x="concept-select-option-list">list of options</span> if any such element exists;
-     otherwise null.</p></li>
-
-     <li><p>If <var>option</var> is not null and is <span>focusable</span>, then run the
-     <span>focusing steps</span> given <var>option</var> and return.</p></li>
-    </ol>
-   </li>
-  </ol>
-
-  <p>To <span data-x="select-focus-previous-option">focus the previous option</span> given a currently
-  focused <code>option</code> element <var>option</var> in a <code>select</code> element
-  <var>select</var>:</p>
-
-  <ol>
-   <li>
-    <p><span>While</span> <var>option</var> is not null:</p>
-
-    <ol>
-     <li><p>Set <var>option</var> to the previous element in <var>select</var>'s <span
-     data-x="concept-select-option-list">list of options</span> if any such element exists;
-     otherwise null.</p></li>
-
-     <li><p>If <var>option</var> is not null and is <span>focusable</span>, then run the
-     <span>focusing steps</span> given <var>option</var> and return.</p></li>
-    </ol>
-   </li>
-  </ol>
+  appearance</span>, then the user agent should allow the user to <dfn>focus another option</dfn>.
+  Performing this action will fire a corresponding <code data-x="event-keydown">keydown</code> event
+  on the currently focused <code>option</code> element, then run the <span>focusing steps</span> on
+  another <code>option</code> within the <code>select</code>. Calling <code
+  data-x="dom-Event-preventDefault">preventDefault()</code> on the <code
+  data-x="event-keydown">keydown</code> event will prevent the new <code>option</code> from being
+  focused.</p>
+
+  <p class="note">Implementations commonly allow the user to choose the next or previous option via
+  the arrow-up and arrow-down keys, or pick the first or last option via the Home or End keys.</p>
 
   <p>If the <code data-x="attr-select-multiple">multiple</code> attribute is present, and the
   element is not <span data-x="concept-fe-disabled">disabled</span>, then the user agent should