of the
manual for more information.</p>
</section>
<section id=gutters>
  <h2>Gutter model</h2>

<p>In CodeMirror 2.x, there was a single gutter, and line markers
created with <code>setMarker</code> would have to somehow coexist with
the line numbers (if present). Version 3 allows you to specify an
array of gutters, <a href="manual.html#option_gutters">by class
name</a>,
use <a href="manual.html#setGutterMarker"><code>setGutterMarker</code></a>
to add or remove markers in individual gutters, and clear whole