[NTG-context] Optional Arguments for cite

Hi Taco, Latex provides an optional argument for \cite. For example, if I want to refer to something on page 4 of a paper, I can say.... see \cite[page~4]{key}. This is typeset as [3, page 4] where 3 is the reference number. How can I do something like this with the bib module. Note that I can not use the page key from the bib file, as the page key stores the page numbers of the paper. I want to cite a specific page (or theorem or ....) of the paper. Thanks, Aditya -- Aditya Mahajan, EECS Systems, University of Michigan http://www.eecs.umich.edu/~adityam || Ph: 7342624008