I've been trying to figure out how to do this for years. Thanks. This is fantastic for anyone who, for example, is plagued with an infestation of children's software on their computers.

I've already incorporated this into a simple reset script to be run whenever a game terminates.

This is also quite helpful for avoiding manual screen resets when starting some more recalcitrant (ancient) OS 9 applications in classic.

I'm convinced there are a lot of people out there who would love this if they knew about it. A friend tipped me off or I would have never spotted it.

Thanks for writing it.!!! Is source code available? I am just curious to see how it works...