pdf.txt

1 0 0 -1 0 256 cm       %% set CTM (flip coords)
1 1 1 RG 1 1 1 rg       %% set colors
/G0 gs                  %% set graphic object /G0
0 0 256 256 re          %% make rect 
f                       %% fill rect
q                       %% save()
192 64 m                %% moveto()
64 64 l                 %% lineto()
64 192 l                %% lineto()
192 192 l               %% lineto()
192 64 l                %% lineto()
h                       %% close()
W* n                    %% clip, discard path
q                       %% save 
130 0 0 -130 63 193 cm  %% set CTM
0 0 0 RG 0 0 0 rg       %% set color
/X0 Do                  %% draw Image /X0
Q                       %% restore
Q                       %% restore