title: getting the comment attribute of nodes/edges in graphviz in svg format
body: <p>I am trying to create an interactive graph, for which I am using the neato -n -Tsvg command, and then including javascript code for the graph in svg format.
  However, for this interactivity, I need some extra information about the nodes and edges that I am putting in the comment attributes while generating the DOT code. However, the comment attribute does not appear in the svg format. Is there some way I can get this information in the svg format?
  I cannot use the id attribute of nodes/edges because id's need to be unique for each node/edge and in my case multipe nodes/edges share the same comment data.
  Any way to accomplish what I am trying?</p>
  
  <p>Thanks!</p>