"key">Required</code> (Boolean)
  </dt>
  <dd>
    Indicates whether snippets that are required to compile the selected snippet are included in the search results.
  </dd>
  <dt>
    <code class="key">RequiredRecurse</code> (Boolean)
  </dt>
  <dd>
    Indicates whether the search for required snippets is recursive. Ignored if <code class="key">Required</code> = <code class="value">False</code>.
  </dd>
  <dt>
    <code class="key">RequiredReverse</code> (Boolean)
  </dt>
  <dd>
    Indicates whether snippe