#A4----------------------------------------------
plane p 0 0 0 1 0 0
pcylinder p p 15 20
profile pf o 5 1 7 l 10 c 2 90 l 5 d -1 0 \
l 14 d 0 -1 l 5 c 2 90
prism pr pf 0 0 23
bfuse f p pr
nexplode f f
depouille result f 0 0 1 f_5 5 0 0 30 0 0 1

set square 3960.45