Easier ways to create .Rd files?

R-helpers:

Are there any ways to auto-generate R-friendly (e.g. will pass a
compilation check) .Rd files given a set of .R code?  How about GUIs
that help properly format the .Rd files?  Thanks!  I want a basic set
of .Rd files that I can update as I go, but as with most things my
documentation typically lags behind my coding by a few days.

--j

Jonathan A. Greenberg, PhD
Assistant Project Scientist
Center for Spatial Technologies and Remote Sensing (CSTARS)
Department of Land, Air and Water Resources
University of California, Davis
One Shields Avenue
Davis, CA 95616
Phone: 415-763-5476
AIM: jgrn307, MSN: jgrn307 at hotmail.com, Gchat: jgrn307