Speaking of pic(1), this URL in the man page is broken
Brian W. Kernighan, PIC — A Graphics Language for Typesetting
(User Manual). AT&T Bell Laboratories, Computing Science
Technical Report No. 116
<http://cm.bell-labs.com/cm/cs/cstr/116.ps.gz> (revised May,
1991).And not just any guy's book that is missing... -- underground experts united http://user.it.uu.se/~embe8573
