clarified select role(s)

refer to w3c/html#1013

/cc @sideshowbarker = changes to conformance requirements

index.html

@@ -728,14 +728,20 @@ <h2 id="docconformance">Document conformance requirements for use of ARIA attrib
         <p><a href="#index-aria-global">global <code>aria-*</code> attributes</a> and any <code>aria-*</code> attributes applicable to the allowed roles and implied role (if any)</p></TD>
     </TR>
     <TR id="select" tabindex="-1">
-      <TD><code><a href="https://www.w3.org/TR/html/rendering.html#the-select-element-rendering">select</a></code></TD>
-      <TD><code>role=<a href="#index-aria-listbox">listbox</a></code></TD>
+      <TD><code><a href="https://www.w3.org/TR/html/sec-forms.html#the-select-element">select</a></code> (with NO <code>multiple</code> attribute and NO <code>size</code> attribute having value greater than <code>1</code>) <span class="changed-feature">(changed)</span></TD>
+      <TD><code>role=<a href="#index-aria-combobox">combobox</a></code></TD>
       <TD><p>Role: <code><a href="#index-aria-menu">menu</a></code></p>
-        <p><a href="#index-aria-global">global <code>aria-*</code> attributes</a> and any <code>aria-*</code> attributes applicable to the <code> listbox</code> or <code>menu</code> role. - <span class="changed-feature">(changed)</span></p></TD>
+        <p><a href="#index-aria-global">global <code>aria-*</code> attributes</a> and any <code>aria-*</code> attributes applicable to the <code> combobox</code> or <code>menu</code> role. - <span class="changed-feature">(changed)</span></p></TD>
+    </TR>
+    <TR id="select2" tabindex="-1">
+      <TD><code><a href="https://www.w3.org/TR/html/sec-forms.html#the-select-element">select</a></code> (with a <code>multiple</code> attribute or a <code>size</code> attribute having value greater than <code>1</code>) <span class="new-feature">(new)</span></TD>
+      <TD><code>role=<a href="#index-aria-list">listbox</a></code></TD>
+      <TD><p><strong class="nosupport">No <code>role</code></strong></p>
+        <p><a href="#index-aria-global">global <code>aria-*</code> attributes</a> and any <code>aria-*</code> attributes applicable to the <code> listbox</code> role. </p></TD>
     </TR>
     <TR id="source" tabindex="-1">
       <TD><code><a href="https://www.w3.org/TR/html/semantics-embedded-content.html#the-source-element">source</a> </code>
-      <TD><a>No corresponding role</a></TD>
+        <TD><a>No corresponding role</a></TD>
       <TD><strong class="nosupport">No <code>role</code> or <code>aria*</code> attributes</strong></TD>
     </TR>
     <TR id="span" tabindex="-1">