f=
            "#equality_comparable1">equality_comparable&lt;T&gt;</a></code></li>

            <li><code><a href=
            "#incrementable">incrementable&lt;T&gt;</a></code></li>

            <li><code><a href="#dereferenceable">dereferenceable&lt;T,
            P&gt;</a></code></li>
          </ul>
        </td>
      </tr>

      <tr>
        <td><code><a name=
        "output_iteratable">output_iteratable&lt;T&gt;</a></code></td>

        <td>
          <ul>
            <li><code><a href=
          