xdot URL feature
I'm using xdot to build my own custom graphs by reading out a file containing dot syntax. The XDot page http://code.google.com/p/jrfonseca/wiki/XDot#Embedding mentions the feature of adding the URL tag to nodes to display information when clicked. I tried to add it to my dot file without success. Can I use this feature in the xdot ROS package? If so, an example is appreciated.