title: Vim sign column toggle
body: <p>When signs are defined in Vim, a column appears at the left of the screen.</p>
  
  <p>From the Vim help:</p>
  
  <blockquote>
    <p>When signs are defined for a file, Vim will automatically add a column of two<br>
    characters to display them in.  When the last sign is unplaced the column<br>
    disappears again.</p>
  </blockquote>
  
  <p><strong>Is it possible to remove the column whilst there are still signs defined?</strong></p>
  
  <p>Ideally I would like to toggle the column on / off.</p>