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<a name="geometry.reference.core.tag_cast"></a><a class="link" href="tag_cast.html" title="tag_cast">tag_cast</a>
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<p>
          <a class="indexterm" name="idm70456"></a>
Metafunction defining a type being either the specified tag, or one of
          the specified basetags if the type inherits from them.
        <