) and <code>CodeMirror.mimeModes</code> (mapping MIME
strings to mode specs).</p>
</section>
<section id=new>
  <h2>New features</h2>

<p>Some more reasons to upgrade to version 3.</p>

<ul>
  <li>Bi-directional text support. CodeMirror will now mostly do the
  right thing when editing Arabic or Hebrew text.</li>
  <li>Arbitrary line heights. Using fonts with different heights
  inside the editor (whether off by one pixel or fifty) is now
  supported and handled gracefully.</li>
  <li>In-line widgets. See <