pnminvert(1)

NAME
       pnminvert - invert a portable anymap

SYNOPSIS
       pnminvert [pnmfile]

DESCRIPTION
       Reads  a  portable  anymap as input.  Inverts it black for
       white and produces a portable anymap as output.

SEE ALSO
       pnm(5) 

AUTHOR
       Copyright (C) 1989 by Jef Poskanzer.