Whereis vgrind - (nf)

[utzoo!decvax!pur-ee!uiucdcs!uicsovax!pat]

#N:uicsovax:2200007:000:205
uicsovax!pat    Oct  6 16:48:00 1982

I can't find "vgrind" anywhere in our 4.1bsd distribution.  It is
used in several places to create documentation.  Anyone know  where
it is  hidden ?

Thanks,
Partick E. Kane
UofIll, Comp. Services Office