In the documentation for my package I would like to reference the Rmpi documentation. I started with \link{Rmpi}, which caused R CMD check to complain that it could not resolve the link. Since Rmpi wasn't loaded, this isn't surprising. Ideally the user would see Rmpi, but the link would go to Rmpi's Rmpi-pkg. It's not clear to me if this is possible. I've combined two documented features to say \link[Rmpi=Rmpi-pkg]{Rmpi}. Is that OK? According to the 2.3.1 documentation \link[Rmpi]{Rmpi} gets me the Rmpi link in the Rmpi package and \line[=Rmpi-pkg]{Rmpi} gets me Rmpi-pkg. There is no mention of combining these two syntaxes. There is also a discussion of \link[Rmpi:bar]{Rmpi}, but that appears to refer to a *file* bar.html rather than an internal value (i.e., \alias{bar}). Not only R CMD check but some users of the package may not have Rmpi loaded, so I'd like the documentation to work gracefully in that situation. "Gracefully" means that if Rmpi is not loaded the help still shows; it does not mean that clicking on the link magically produces the Rmpi documentation. -- Ross Boylan wk: (415) 514-8146 185 Berry St #5700 ross at biostat.ucsf.edu Dept of Epidemiology and Biostatistics fax: (415) 514-8150 University of California, San Francisco San Francisco, CA 94107-1739 hm: (415) 550-1062