me instance of <code>Allocator</code> or some other allocator type rebound
        from <code>Allocator</code>. A <code>pointer</code> constructed from
        <code>p</code> shall dereference to <code>*p</code>.
      </li>
    </ul>
  </li>
</ol>
Indices of a given <code>multi_index_container</code> instantiation cannot have
duplicate <a href="indices.html#tags">tags</a>, either within a single
index or in two different indices.
</p>

<h4><a name="types">Nested types</a></h4>

<code>ctor_args_list</code>
