I'm honestly at a loss at what this function could possibly be used for. At first I thought it was a type of save function but I was wrong from the thousands of people who commented that you can't save, which honestly wasn't a problem. I beat the game just fine though I'm still working on my sets of perfects; the game overall is quite nice and reminds me a bit of Megaman 2. ^^
...BUT that still leaves me to wonder wtf is the F1 key for? All I get is a bad buzzer sound. Any ideas or answers please?