1 parabola parabola 0 0 0 30
2 revsurf rs_parabola parabola 0 400 0 1 0 0
3 offset rs_parabola_of rs_parabola 10
4 mkface result rs_parabola_of .3 .5 .3 .5
5 set MaxFTol 9.9999999999999995e-08
6 set MaxETol 1.5769964559560117e-07
7 set MaxVTol 1.5769964559560122e-07