all contained linestrings
                  </p>
                </td>
</tr>
<tr>
<td>
                  <p>
                    Multi Polygon
                  </p>
                </td>
<td>
                  <p>
                    Removes all consecutive duplicate points in all contained polygons
                    (all rings)
                  </p>
                </td>
</tr>
</tbody>
</table></div>
<h6>
<a name="geometry.reference.algorithms.unique.h6"></a>
          <span class="phrase"><a name="geo