I don't know what that has to do with being modal. The most famous example of a modal UI for Unix is probably vi, which has an interface that's so bad and confu

I don't know what that has to do with being modal. The most famous example of a modal UI for Unix is probably vi, which has an interface that's so bad and confusing and unapproachable that not being able to exit the program is a meme, but yet it seems to be loved by hardcore Unix geeks.