[comp.lang.fortran] f77 cross-reference tool?

pockrand@SRC.Honeywell.COM (Mitch Pockrandt) (08/15/90)

I apologize if this should be incredibly obvious, but the obvious sources 
of information have not been useful (RTFM doesn't help much either).
Can anyone point me to a useful PD crossreferencing tool for f77 source 
files that will run under UNIX?  I specifically need to list variable 
names and where each occurance in the source is located.

Thanks.

Mitch Pockrandt  (pockrand@src.honeywell.com)