beziercurve profile 6 0 10 0 -5 0 0 -5 -20 0 5 -20 0 5 0 0 0 10 0 
mkedge profile profile 
wire profile profile 
mkplane profile profile
polyline w 0 0 0 10 -30 30 0 -70 90
pipe result w profile

checkprops result -s 4702.76
