[plt-scheme] Web-server question: how to maintain session across a hyperlink

I'm having great success porting a Scheme webapp to web-server.  I'm
amazed at how much code I have been able to throw out.

However I don't see how to maintain a session across a hyperlink.
Send/suspend works for forms, but I need hyperlink navigation as well.
Hardcoded hyperlinks won't work obviously as they wouldn't retain
session information.

The only solution I can think of is, for each hyperlink I need, create
an encapsulate send/suspend call and store that in a table, and have
the hyperlink reference that.  Is there a better way?

Thanks
Don