I was doing some research on 3rd-party packages used in our software, and
putting the results into a table with tbl, groff, and ms. It got to be too much
information for a table, so I rewhacked the information into XML, and then
wrote a stylesheet that emitted tbl with embedded ms commands and
embedded PS callouts with pdfmarks, so when it was run through xslt, then
tbl, then ms, then groff, then Distiller, it produced a PDF with hotlinks!