/dd>
        <dt id="SemanticsFlag">
          <span class="name "><a href="dart-ui/SemanticsFlag-class.html">SemanticsFlag</a></span>         
        </dt>
        <dd>
          A Boolean value that can be associated with a semantics node.
        </dd>
        <dt id="SemanticsUpdate">
          <span class="name "><a href="dart-ui/SemanticsUpdate-class.html">SemanticsUpdate</a></span>         
        </dt>
        <dd>
          An opaque object representing a batch of semantics updates. <a href="dart