tml/MessagePort-class.html">MessagePort</a></li>
      <li><a href="dart-html/Metadata-class.html">Metadata</a></li>
      <li><a href="dart-html/MetaElement-class.html">MetaElement</a></li>
      <li><a href="dart-html/MeterElement-class.html">MeterElement</a></li>
      <li><a href="dart-html/MidiAccess-class.html">MidiAccess</a></li>
      <li><a href="dart-html/MidiConnectionEvent-class.html">MidiConnectionEvent</a></li>
      <li><a href="dart-html/MidiInput-class.html">MidiInput</a></li>
      <li><a 