If you take a look at your laptop's keyboard, you'll notice that the top row keys have icons printed above, with "F" and a number, like F1, F2, and so on, below each one. These are known as function ...
Lifewire on MSN
Your Mac keyboard is more useful than it looks
Enable F1 through F12 as standard keys or use them for quick system controls ...
Even if you’ve used the Mac for decades, I suspect you have never fully understood the Fn key. Not helping is the fact that Apple sometimes calls it the Function key, but all Mac keyboards already ...
How-To Geek on MSN
This useless keyboard key became one of my favorites after one change
My Caps Lock key only gets ACCIDENTAL clicks.
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