="top"><p>
            This header file does not need to be included directly by any user program
            as it is normally included by other Spirit header files relying on its
            content.
          </p></td></tr>
</table></div>
<h6>
<a name="spirit.advanced.customize.clear_value.h2"></a>
          <span class="phrase"><a name="spirit.advanced.customize.clear_value.namespace"></a></span><a class="link" href="clear_value.html#spirit.advanced.customize.clear_value.namespace">Namespace</a>
       