Just an example of a slow undo:
Cleaning up a DWG from a customer and hitting PURGE to clear out blocks, layers ect is one of those tasks that can make Rhino “freze” for many minutes.
This is often needed just before deadlines to adopt las minute changes so time is of essence. And since we have no indication on how long we should wait then this is one of those scenarios where hitting ESC would be cherished. Or would I save time on terminating Rhino and then do the changes again? I don’t know, but I do know how stressing it is to wait and wait and have no indication on when and IF it is done
Hope that can cast some light on the topic. (And this is written in such a situation… Rhino is frozen and I have time to sit here and type slowly while frequently looking at Rhio in the background to see if it is done, instead of working efficiently towards deadline.