The proper documentation will have details about stuff like this in it, so that should help out a lot when it is ready. SIGGRAPH is kind of getting in the way right now, but once I get back from SIGGRAPH I should be able to focus on the documentation with more full attention.
HI Alberto,
Here one way with Twist(=Rotate)
Draw Lines
Use Loft
Deselect upper edge and rotate lower edge (this is Twist, Loft is dynamic)
Boole Profile with Plane
Shell and Filet
Array
