<map id="Graphical Class Hierarchy" name="Graphical Class Hierarchy"> <area shape="rect" id="node1" href="$a03040.html" title=" " alt="" coords="5,5,144,44"/> <area shape="rect" id="node2" href="$a04524.html" title="Partial specialization for std::pair." alt="" coords="192,5,333,44"/> </map>