#A5----------------------------------------------
box b1 40 40 15
profile p o 15 10 5 l 10 c 10 90 l 10 c 5 90 l 10 \
c 10 90 l 10 c 5 90
polyline p2 0 0 5 0 0 25
pipe p p2 p
bfuse f b1 p
nexplode f f
depouille result f 0 0 1 f_12 10 0 0 25 0 0 1

checkprops result -s 6377.54