> So we could include an "unsafe" commands like Fillet into
> this group and MoI would perform automatic saving before starting a command.

The main focus for the next beta after is going to be an overhaul for Fillet, Chamfer, Offset, Shell, and booleans. If all goes according to plan, these commands will run in a special "sandbox" environment where the main program will be protected from any crashes in those commands, and also allow you to cancel them in mid-calculation.

If that works properly, it should tame these commands.

- Michael