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ffmchar("plus",15,x_ht#,0); italcorr .5x_ht#*slant; x1=good.x(2u+s+noise); x2=good.x(w-2u-s+noise); x3=.5w+noise; x4=.5w+noise; y1=.5h+noise; y2=.5h+noise; y3=noise-o; y4=h+o+noise; draw z1--z2; draw z3--z4; labels(1,2,3,4); endchar;