.1C .PS 6i scale = 100 xm=.3i ym=.3i w1=1.5i w2=4i x=6i y=8.75i yy=y-3*ym-w2 box dashed ht y wid x with .sw at 0,0 .ps 18 box ht w2 wid w2 with .n at x/2,y-ym box ht w1 wid w1 with .ne at (x+w2)/2,yy box ht w1 wid w1 with .ne at (x+w2)/2 - (w1+xm),yy .ps "\*(ZY" ljust at x/2-w2/2,y-2*ym-w2 .\" "\*(ZX" rjust at x/2+w2/2-w1,y-2*ym-w2-w1 .PE