postscript duplex test

%!PS-Adobe-2.0 EPSF-2.0

% Print with...
%  lp -o raw [filename]
% ... to avoid influence of drivers.

%%BoundingBox: 0 0 595 842

72 72 moveto 144 72 lineto 144 144 lineto 72 144 lineto
0 1 0 setrgbcolor
fill
showpage

595 72 sub 72 moveto 595 72 sub 144 lineto 595 144 sub 144 lineto 595 144 sub 72 lineto
1 0 0 setrgbcolor
fill
showpage