SYNOPSIS
ppm3d leftppmfile rightppmfile [horizontal_offset]DESCRIPTION
Reads two portable pixmaps as input. Produces a portable pixmap as output, with the images overlapping by horizontal_offsetpixels in blue/red format.
horizontal_offset defaults to 30 pixels. Pixmaps MUST be the same size.
AUTHOR
Copyright (C) 1993 by David K. Drum.