Also look at the cgvg package on Debian.

% cg pmessage

Shows you references to pmessage in the code, assuming you are in the
source tree.  Then use vg and one of the match numbers to start vi on
the match you want.

% vg 25

If you're an emacs fan, ctags or etags will be installed, and they are
useful for exploring definitions using M-.

James Cameron    mailto:quozl at