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Report -
Gernot Hoffmann Bézier Curves - Albert Einstein.../x0 ci 1 get def /y0 ci 2 get def /x1 ci 4 get def /y1 ci 5 get def /x2 ci 7 get def /y2 ci 8 get def /n1x x2 x0 sub kf mul def /n1y
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