pswhite - PostScript filter.

       Copyright (C) 1987-2002
       University Corporation for Atmospheric Research
       The use of this Software is governed by a License Agreement.

NCAR                                             September 1990                                  PSWHITE(1NCARG)

pswhite  is  a  filter which reads a PostScript file as input and writes a PostScript file as output.  In
       the output file the filter forces a white background and complements the intensity  values  (values  with
       R=G=B)  so that the default white foreground appears as black on the white background.  This filter works
       only on PostScript files produced by ctrans - the CGM translator in the NCAR Graphics software.

       pswhite - PostScript filter.

ctrans(1NCARG), psblack(1NCARG)

pswhite<input_PostScript_file>output_PostScript_file