Look up: Nroff

1. 
   nroff
   /N'rof/ [Unix, from 'new roff'] A text formatting language and interpreter, companion to the Unix typesetter troff, accepting identical input but preparing output for terminals and line printers. See also groff. [Jargon File]
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2. 
   Nroff
   `nroff` (short for `new roff`) is a Unix text-formatting program; it produces output suitable for simple fixed-width printers and terminal windows. It is an integral part of the Unix help system, being used to format man pages for display. It was a descendant of the RUNOFF program from CTSS, the first computerized text-formatting program, and is a predecessor of the Unix troff document processing system. There is also a free software version ...
   Found on http://en.wikipedia.org/wiki/Nroff