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ffmchar("X",13,ht#,0); italcorr ht#*slant; x1=good.x(1.5u+s+noise); x3=good.x(1.5u+s+noise); w-x2=good.x(1.5u+s+noise); w-x4=good.x(1.5u+s+noise); top y1=h+o+noise; top y4=h+o+noise; bot y3=noise-o; bot y2=noise-o; draw z1--z2; draw z3--z4; labels(1,2,3,4); endchar;