roundrect 0 -10 150 110 5 5 
label  20 0 1H
label  40 0 1L
label  60 0 2H
label  80 0 2L
label 100 0 3H
label 120 0 3L
polyline 10 80 130 80
solidpen 192 192 192 0
polyline 70 5 70 80
polyline 20 5 20 80
polyline 120 5 120 80
*
polyline 45 5 45 80
polyline 95 5 95 80
label 20 90 0
label 120 90 Ts
label 70 90 Ts/2
*
label 140 20 α
label 140 40 β
label 145 90 tr