polyline 20 20 100 20
solidpen 0 0 0 0
polyline 20 -20 20 60
polyline 60 -20 60 60
rectangle 5 10 35 30
rectangle 45 10 75 30
solidpen 255 0 0 0
polyline 10 29 30 10
polyline 50 29 70 10
label 30 35 on
label 70 35 off