<map id="structs" name="structs"> <area shape="rect" id="node3" href="$group__ofdm__blk.html" title="OFDM Blocks" alt="" coords="681,25,785,55"/> <area shape="rect" id="node2" href="$group__block.html" title="All C++ blocks that can be used in GR graphs are listed here or in the subcategories..." alt="" coords="7,25,279,55"/> </map>