                <code class="computeroutput"><span class="identifier">iterator_traversal</span><span class="special">&lt;</span><span class="identifier">X</span><span class="special">&gt;::</span><span class="identifier">type</span></code>
                  </p>
                </td>
<td>
                  <p>
                    Convertible to <code class="computeroutput"><span class="identifier">bidirectional_traversal_tag</span></code>
                  </p>
                </td>
<td>
                </t