- Prerequisites: GNU make and, ANSI C, a curses library, Perl, nroff
- or GNU troff (`groff'), Bourne Shell and the common utilities,
- conforming to the Single UNIX Specification Version 2.
+ Prerequisites: IEEE Std 1003.1-2001 (POSIX.1-2001), GNU make, a
+ curses library, Perl, and either nroff or GNU troff (`groff').