> Does exist a "full screen" without the UI? (just keeping Zoom Pan Rotate...)

No not right now. I've thought a little bit about making some way to collapse/expand the side pane and bottom toolbar to make this possible, but I don't think that this will be available for V1.


> Ps What is the utility when you make a loft of the "Clic on curve for change seam"?
> Ok that permit to "move" the seam, works fine but what is the use of that :)

Most of the time there isn't any use in it because the automatic calculation for how to align things works pretty well. But that method is provided in case the automatic alignment didn't work very well.

- Michael