If you have a Macbook, then you must have wondered what all the special keys do. There are several characters on a Mac and you may not be adept with all of them. These keys are called function keys, and they all are written as the Fx. Here x is replaced with the numerical keys like F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11, and F12.

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