Hi Marco, re: Patch surface - that's definitely on my list of things that I want to add. But it's a particularly tricky process to make work very well, it's pretty easy for patch generation methods to end up with a lot of excess undulations and wiggles in the generated fit surface.

So because of that it will take quite a bit of concentrated effort and experimentation to produce that particular command and that's why I do not have it yet and why I'm not exactly sure when it will get done.

- Michael