First of all: I just tried sculptris for 15 minutes or so but I already had the impression that it's a really great program and very promising, especially when bearing in mind that's only Alpha and already so far developed.
What I missed at first was that I couldn't undo an action with strg+z but then I checked the documentation and it said I should be able to. It took me a few minutes until I realized it didn't work because I have a German keyboard, where z is in the place of y (I think with Swedish + Polish keyboards it might be the same). I use many non-multilingual programs which use English language, and I don't know wether they recognize the character set or sth., because I only very rarely have had this kind problem. I don't think it's important, so no need to implement any keyboard recognition feature or sth. But it would be cool to have a hint in the documentation about this, so it would read: Ctrl+Z Undo an operation. There are 12 levels of history. (on other European language keyboards it may be necessary to use Ctrl+Y instead)
Yeah, I've had reports of either Ctrl+Y or Ctrl+; performing undo depending on the keyboard layout. Most "normal" applications use a different kind of input method that registers actual characters regardless of position, but I've been using DirectInput, which is more like what you'd find in games. I will change some of this to work more as expected, at least for letter keys.