language for typesetting graphs
Grap is a language for typesetting graphs specified and first
implemented by Brian Kernighan and Jon Bentley at Bell Labs. It is an
expressive language for describing graphs and incorporating them in
typeset documents. It is implemented as a preprocessor to Kernighan's
pic language for describing languages, so any system that can use pic
can use grap. For sure, TeX and groff can use it.

Maintainer: Hermann Gottschalk <magnum@pestilenz.org>

WWW: http://lunabase.org/~faber/Vault/software/grap/
