<map id="distance" name="distance">
<area shape="rect" id="Node000001" title="function that returns the distance between two points a and b" alt="" coords="5,29,76,55"/>
<area shape="poly" id="edge1_Node000001_Node000001" title=" " alt="" coords="27,29,26,12,31,5,41,3,50,5,55,12,51,15,47,10,40,8,34,10,31,14,32,29"/>
</map>
