Displaying graphics on the screen.

[H. van de Beek]

I want ot display some graphics on my screen. These graphics 
should be drawn from x,y coordinates and I want them to look 
like a staircase.
Because I definitly don't want to re-invent the wheel I wondered 
if somebody out there also ran into this problem?.
If so I would like to know their solution.

          Thanks in advance.
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