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HELP

function f(x) { y = 1/0; return y }
...
aX = 0; bX = 170; aY = 0; bY = 170/4
Dx = 5; Dy = 5
...
Cax="grey"
Lx=[0,20,20,20,35,35,35,60,60,60,70,70,70,88,88,88,120,120,120,140,140,140,170,170,140,140,120,120,88,88,70,70,60,60,35,35,20,20, 0,0]
Ly=[0, 0,31, 0, 0,31, 0, 0,35, 0, 0,35, 0, 0,26, 0,  0, 26,  0,  0, 25,  0, 0, 23 , 23, 25, 25, 26,26,20,20,35,35,28,28,31,31,22,22,0]
...
AX=BX=AY=BY=""