Does anybody know what those stupid F buttons are for across the top of the keyboard?

At LEAST once a week, when I go to grab the keyboard to type, I'll accidentally bump one of those keys and suddenly, the screen gets smaller by half and some window loaded with gibberish pops up across the bottom third of the screen!! What the hell is the purpose of that? I know what F1, 8 and 10 are for.

Does anybody know what those stupid F buttons are for across the top of the keyboard?
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