[Design] Undo Use Cases

[Davor Cubranic]

John Anderson wrote:
> As a big fan of Undo, I find that the difference between being able to 
> undo any change versus just some changes has a big impact on my 
> satisfaction with a product. If Undo isn't available when I need it, 
> I'm less likely to go looking for it the next time I could use it.
>
I agree: an application that can't undo pretty much any change (within 
reason :-) *and* to an arbitrary depth (although in practice rarely more 
than 5-6 steps), just doesn't inspire confidence these days.

Davor