title: aria landmark roles, only for containers?
body: <p>I'm implementing ARIA landmark roles on a existing html layout. The less code I need to change the better.  All examples I found use the landmark for the whole container. 
  for example.</p>
  
  <pre><code>&lt;div id="content" role="main"&gt;
  &lt;p&gt;....&lt;/p&gt;
  &lt;ul&gt;...&lt;/ul&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>In my templates there isn't always a container surrounding the content I wan't to mark as ARIA landmark. Sometimes it would be easier, for the implementation, not to mark the whole container, but only to set a mark to the beginning of the relevant content. </p>
  
  <p>So it would look like this:</p>
  
  <pre><code>&lt;div role="main"&gt;&lt;/div&gt;
  &lt;p&gt;....&lt;p&gt;
  &lt;ul&gt;...&lt;/ul&gt;
  </code></pre>
  
  <p>From the semantic point of view the screenreader or other software doesn't know exactly when the content ends or perhaps thinks the content is empty. Could this be a problem?</p>
  
  <p>I tested it with the JAWS screenreader, it seems to behave the same. JAWAS only looks for the beginning of a landmark. 
  Is this a no-go? Or could I use it this way?</p>