Extending UNDO

 From:  mickelsen
Is it possible to make UNDO work past a save? That is, UNDO clear into a previous session? I realize that this would take up a bunch of memory, but perhaps it could be set up so that all the UNDO information for an editing session is saved in a separate file when you do a save. You could could make it optional and also make it easy to delete UNDO files from within MoI.
Perhaps this could go on the wish list for V3.