title: Why does clicking on the 'memory indicator' in PyCharm reduce the 'Used' heap size?
body: <p>How to reproduce:</p>
  
  <ol>
  <li>Open a project in PyCharm.</li>
  <li>Enable the memory indicator.
  
  <ol>
  <li>In PyCharm, click File-->Settings.</li>
  <li>In the Settings window, click 'Appearance and Behavior'-->Appearance.</li>
  <li>Under 'Window Options', click the checkbox that says 'Show memory indicator'.</li>
  <li>Click 'OK'.</li>
  <li>The indicator should appear in the bottom-right corner of the editor.</li>
  </ol></li>
  <li>Wait a minute or two and you should see the memory indicator indicate that PyCharm is using more memory.
  
  <ul>
  <li>Example: '67 of 676' --> '172 of 676'.</li>
  <li>This may depend on the memory settings you have set up. In Help-->'Edit Custom VM Options', I have '-Xms' set to 128m and '-Xmx' set to 700m.</li>
  </ul></li>
  <li>Click on the memory indicator.</li>
  <li>You should see the number drop down to around where it started.
  
  <ul>
  <li>Example: '172 of 676' --> '80 of 676'.</li>
  </ul></li>
  </ol>
  
  <p>I have looked online and can't find documentation for this feature.</p>