PIC

Brian Kernighan

A graphics meta-language for textually describing pictures, for use with troff. Featured in More Programming Pearls, Jon L. Bentley, Addison-Wesley, 1988.

"PIC - A Language for Typesetting Graphics", Brian W. Kernighan, Software Practice & Experience 12(1):1-21 (Jan 1982).

"PIC - A Graphics Language for Typesetting, Revised User Manual", Bell Labs TR 116, Dec 1984.