> But still, PS is for printing.

Not necessarily.  It may have been designed by Apple fro printing, but 
the display system on the the NeXT Cube (Steve Jobs' foray into the 
high-end workstation market, while on a break from Apple) was 
Postscript-based, instead of being X11-based, like the other workstations.

-- 
/*Francois Labreque*/#local a=x+y;#local b=x+a;#local c=a+b;#macro P(F//
/*    flabreque    */L)polygon{5,F,F+z,L+z,L,F pigment{rgb 9}}#end union
/*        @        */{P(0,a)P(a,b)P(b,c)P(2*a,2*b)P(2*b,b+c)P(b+c,<2,3>)
/*   gmail.com     */}camera{orthographic location<6,1.25,-6>look_at a }

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