Sapien Nudge Values

Would someone care to explain, in an intricately detailed fashion, what exactly angular nudge and translate nudge modify? They are located in the "Tool Options Pane" in Sapien. Also, any differences between Sapien for Halo 1 and Sapien for Halo 2's implementation would be noteworthy.

Again, I am looking for an in-depth answer; steps that illustrate functionality would be quite useful. Basically, I think they modify the widget interaction somehow, but I would rather ask those who have used Sapien frequently than make a guess.

Thanks,
Nick

I couldn't find any differences with using the mouse/keyboard, maybe it's a controller thing for using the analogue sticks to position objects with a snap of sorts.

edit: what does expert mode change, korn?

It is supposed how much you "nudge" the placement or orientation of an object when you hit the arrow keys. It doesn't seem to work in h2 sapien for some reason.