     <span><span><span>(<a href="../../index.html#type-needs_canon">needs_canon</a> * <a href="../../../../PulseValueHistory/index.html#type-t">Pulselib.PulseBasicInterface.ValueHistory.t</a>)</span> option</span> <span class="arrow">&#45;&gt;</span></span>
      <span><span><span>(<a href="../../index.html#type-needs_canon">needs_canon</a> * <a href="../../../../PulseValueHistory/index.html#type-t">Pulselib.PulseBasicInterface.ValueHistory.t</a>)</span> option</span> <span class="arrow">&#45;&gt;</span></s