title: Import settings in Intellij IDEA, PhpStorm or WebStorm
body: <ol>
  <li><p>What is the difference between:</p>
  
  <ul>
  <li>Import my settings from a previous version (<code>&lt;path&gt;</code>) (when install)</li>
  <li>Import settings from a JAR archive (<code>File | Import settings</code>)</li>
  </ul></li>
  <li><p>For <code>Import my settings from a previous version (&lt;path&gt;)</code> -- what are the necessary files?</p>
  
  <ul>
  <li>only directory <code>config</code> ?</li>
  <li>what about  directory <code>system</code> ?</li>
  </ul></li>
  </ol>