profile p x 5 y 1 x -4 y 4 x -1 y -5
prism pr p 0 0 1
profile pp x 2 c 1 90 y 2 ww
trotate pp 3 3 0 -1 0 0 180
ttranslate pp 1 -2 0.3	
plane pl 0 0 0.3 0 0 -1
featlf pr pp pl 0 0 0.3 0 0 -0.3 1 1
featperform lf result


checkprops result -s 55.3133