terval
                  for interval_maps) and and a Set. This results in the selection
                  of a submap, and can be defined as a generalized selection function
                  on Maps.
                </p>
                </td>
</tr>
</tbody>
</table></div>
</div>
<div class="section boost_icl_function_reference_intersection_functions" lang="en">
<div class="titlepage"><div><div><h4 class="title">
<a name="boost_icl.function_reference.intersection.functions"></a><a class="link" href="inters