rade>Upgrading to version 4</h2>

<p><strong>Note:</strong> Version 4 hasn't been released yet. The
information here is provisional and might still change.</p>

<p>CodeMirror 4's interface is <em>very</em> close version 3, but it
does fix a few awkward details in a backwards-incompatible ways. At
least skim the text below before upgrading.</p>

<section id=multisel><h2>Multiple selections</h2>

<p>The main new feature in version 4 is multiple selections. The
single-selection variants of methods are still th