an></code> models
                </p>
              </th>
<th>
                <p>
                  then <code class="computeroutput"><span class="identifier">filter_iterator</span></code>
                  models
                </p>
              </th>
</tr></thead>
<tbody>
<tr>
<td>
                <p>
                  Readable Iterator, Single Pass Iterator
                </p>
              </td>
<td>
                <p>
                  Input Iterator
                </p>
              </td>
</tr>