Functionality of pdf()

Hello,

this might be too much to ask, but just a thought...     There are some
efforts in the bioconductor area where people create functions to produce html
tables which include links to current information. Would there be any chance
that somebody can implement a similar functionality in the pdf device, so that
you can not only create a graph but can also create a "clickable" graph with
link to current information?

Cheers,
hinrich    d8-)