title: nav role=navigation
body: <p>I'm a little confused with roles. If I have in my page a navigation that is enclosed in a <code>nav</code> element and specify a <code>role="navigation"</code>.</p>
  
  <pre><code>&lt;nav role="navigation"&gt;
      ...
  &lt;/nav&gt;
  </code></pre>
  
  <p>Isn't it already semantically explicit that the <code>nav</code> section is navigation?</p>
  
  <p>Or if I have some other navigation sections on my page, and specify role for only one of them, this section becomes the most important on a page? And those without <code>role="navigation"</code> just boring navigations?</p>