[pstricks] hyperlink for node connector?

[Bob Tennent]

 >|> I'd like to set up a hyperlink (using \href) for a node connector. I can
 >|> use \mput to create a "click point" in the middle of the connector, but
 >|> I'd prefer to make the whole connector (plus a small margin around it)
 >|> clickable, with nothing visible added. Any suggestions?
 >|
 >|http://tug.org/PSTricks/main.cgi?file=Examples/misc#hyperref

Thanks.  I'm already hyperlinking *nodes*; see for example the charts at

http://www.cs.queensu.ca/undergraduate/prereq.html

But my question was on (discreetly) hyperlinking node *connectors*.
What seems to work well enough is to use \mput and then *re-draw* the
connector to cover the visible blank at the mid-point.