<dt><pre><a href="jsidledetector.html#IdleDetector"><span class="Identifier">IdleDetector</span></a> <span class="Other">=</span> <span class="Keyword">ref</span> <span class="Keyword">object</span> <span class="Keyword">of</span> <span class="Identifier">JsRoot</span>
  <span class="Identifier">screenState</span><span class="Operator">*</span><span class="Other">:</span> <span class="Identifier">cstring</span>      <span class="Comment">## https://developer.mozilla.org/en-US/docs/Web/API/IdleDetector/scree