Interuptable commands

I couldn't begin to count how many times over the years I have had to forcibly
crash Max because a command is going to take 3 weeks to complete, Normalize
spline with default settings on a very long spline anybody :-)

Over the years this has become a staple of everyday Max life in the studio, a
misclick here, an incautious click of curiosity on that tick box there and your
opening up explorer to check your last austosave. not always very fun on very
large files that can take an age to re-open, leave alone the lost time.

Surely it can't be outside of the capabilities of the Autodesk programming