groff: groff (document formatting system) groff: groff: The GNU groff package provides versions of troff, nroff, eqn, tbl, and groff: other Unix text-formatting utilities. Groff is used to 'compile' man groff: pages stored in groff/nroff format into a form which can be printed or groff: displayed on the screen. These man pages are stored in compressed groff: form in the /usr/man/man? directories. groff: groff: groff: groff: