Long:
Shows PBM/PGM/PPM-files on the Graffiti video card. To move
outsized pictures use mouse, to change screen resolution
press F1, F2 and F3.
You may change the brightness of the picture using + and -.
Quit with mouse buttons, ESCAPE, RETURN or ENTER.
If you don't specify a screen resolution the program opens a
(hopefully) fitting screen. This procedure is then repeated
for every file.
Note: PPM-files will be reduced to 256 colors. Only in this
case the +o, +t, -c, -n, -o, -l, -e and -f options are available.
Syntax: pnmview [-v|+v] [[+o] [-n|-o|-l|-e|-f] | [+t [-cColors]]]
[-1|-2|-3] file1 [file2 ...]
+v : use verbose mode (default)
-v : don't use verbose mode
-1 : screen resolution: 160x256
-2 : screen resolution: 320x256
-3 : screen resolution: 640x256 (requires OS 3.0 and AGA)
+o : ordered color reduction (default)
-n : dithering: none (default)
-o : dithering: ordered dither
-l : dithering: line diffusion
-e : dithering: error diffusion
-f : dithering: Floyd-Steinberg dithering
+t : octree color reduction
-c : max. number of colors for octree color reduction,
16 .. 256 (default: 256)
fileX : PBM/PGM/PPM-file
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