Merge pull request #32 from kojiishi/attributes

[Shadow DOM] Add Attributes section

spec/shadow/index.html

@@ -1078,6 +1078,28 @@ <h3>Inert HTML Elements</h3>
         <p>All other <a>HTML elements</a> in the <a title="shadow tree">shadow trees</a> <strong>must</strong> behave as if they were part of the <a>document tree</a>.</p>
       </section>
 
+      <section>
+        <h3>Attributes</h2>
+
+        <p>When [[!HTML]] defines the processing algorithms to traverse trees for the following attributes, they <strong>must</strong> use the <a>composed tree</a>.
+        <ul>
+          <li><code>dir</code></li>
+          <li><code>draggable</code></li>
+          <li><code>dropzone</code></li>
+          <li><code>hidden</code></li>
+          <li><code>lang</code> and <code>xml:lang</code></li>
+          <li><code>spellcheck</code></li>
+          <li><code>title</code></li>
+        </ul>
+
+        <p class="note">This list does not include attributes that are defined elsewhere in this specification. Such attributes include:
+        <ul>
+          <li><code>tabindex</code> and <code>autofocus</code> are defined in <a>Focus Navigation</a>.</li>
+          <li><code>role</code> and <code>ARIA</code> are defined in <a>Assistive Technology</a>.</li>
+        </ul>
+        <p class="issue">This section is still under discussion and it may change. The status is tracked in <a href="https://www.w3.org/Bugs/Public/show_bug.cgi?id=27222">W3C bug 27222</a>.
+      </section>
+
     </section>
 
     <section>