<map id="gr_top_block" name="gr_top_block"> <area shape="rect" id="node2" href="$classgr__hier__block2.html" title="Hierarchical container class for gr_block's and gr_hier_block2's." alt="" coords="100,259,207,285"/> <area shape="rect" id="node4" href="$classgr__basic__block.html" title="The abstract base class for all signal processing blocks.Basic blocks are the bare abstraction of an ..." alt="" coords="99,184,208,211"/> <area shape="rect" id="node6" href="$classgr__msg__accepter.html" title="Accepts messages and inserts them into a message queue, then notifies subclass gr_basic_block there i..." alt="" coords="13,95,136,121"/> <area shape="rect" id="node8" href="$classgruel_1_1msg__accepter.html" title="Virtual base class that accepts messages." alt="" coords="5,5,144,32"/> </map>