led</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div>
<div class="memdoc">

<p>Enables or not measure bars (false by default) </p>
<dl><dt><b>Parameters:</b></dt><dd>
  <table class="params">
    <tr><td class="paramname">pr</td><td>a pianoroll previously created with GuidoAR2PianoRoll or GuidoMidi2PianoRoll </td></tr>
    <tr><td class="paramname">enabled</td><td>a boolean corresponding to the measure bars dr