Re: Why do we even need a "mono" option?

[<br...@ph...>]

Ethan Merritt wrote:

> I have a question about these "mono" options.
> If you send a color postscript or pdf to a mono printer, you
> get a nice grayscale plot courtesy of PostScript itself.

Whether that plot comes out nice grayscale or unreadable grayscale 
depends on a lot of unrelated things.

> Even MSword and PowerPoint offer the option to toggle 
> color/grayscale for individual imported images.

Unfortunately, the PostScript world is a lot larger and more varied than
Ghostscript, Word and PP. The primary customer class insisting on
black&white plots seem to be certain scientific journals. Those editors
apparently reject colour PostScript on sight, because they don't want
the troubles caused by different output devices rendering the same 
colour to different shades of gray.