<map id="G" name="G"> <area shape="rect" id="node2" href="$a00743.html" title="Base class for state attributes." alt="" coords="5,160,136,189"/> <area shape="rect" id="node4" href="$a00500.html" title="Base class/standard interface for objects which require IO support, cloning and reference counting..." alt="" coords="27,83,115,112"/> <area shape="rect" id="node6" href="$a00627.html" title="Base class from providing referencing counted objects." alt="" coords="12,5,129,35"/> </map>