Provided by: ncl-ncarg_6.1.2-7_amd64 bug

NAME
       psblack - PostScript filter.


SYNOPSIS
       psblack < input_PostScript_file > output_PostScript_file


DESCRIPTION
       psblack 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 black background and scales the  intensity
       values  (values with R=G=B) so that any intensity greater than or equal to .8 is mapped to
       white.  This filter works only on PostScript files produced by ctrans - the CGM translator
       in the NCAR Graphics software.


SEE ALSO
       ctrans(1NCARG), pswhite(1NCARG)


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