UNIX Tools for Typesetting and Shell Programming

Jet Propulsion Laboratory (JPL) has developed software tools that extend the capabilities of the Groff typesetting system for UNIX. Groff, or GNU Troff, descends from the Troff formatter originally developed at AT&T Bell Labs. It operates on text files containing a mixture of unformatted text and formatting instructions (in the same spirit as HTML or TeX) and produces finished documents in various formats suitable for viewing or printing (PDF, HTML, etc.).