Hi mir4ea, it's sort of the original NURBS editing program, it's kind of old and odd in various ways from it's ancient heritage but does have a lot of stuff in it. Even the base package is pretty expensive, the one you link to is 4.400€ . Originally you had to also buy a super expensive specialized Silicon Graphics workstation computer to run it on too, but you don't need the SGI machine for it anymore.

It's kind of the opposite from MoI in a some sense since the UI is sort of semi hostile. It would be kind of an odd thing to get into, you should expect a long ramp up training period with it, it's kind of used only in special circumstances these days, sort of by people who like to spend lots of money on things I guess.

- Michael