SEE THE BEST PRICES ON NEW MACS ON AMAZON What Do Function Keys Do? The modifier keys, on the other hand, are the sets of keys that you use in combination with another key to perform specific functions like the CMD, CTRL, Caps Lock, Shift, and Option keys. sun icon for brightness and speaker icon for volume). F1, F2, F3, etc.) or an icon that signifies what they do (e.g. The function keys are usually located at the top most part of your keyboard and are either marked with a letter F followed by a number (e.g. Among the sets of keys that the functions of which you can easily change and remap according to your needs are the function and modifier keys. You can modify the functions of some keys, but there are some that you cannot. There are several sets of keys on your Mac keyboard that perform individual functions. If you have a lot of unused keyboard shortcuts yourself and would like to replace their functions with something that you actually use, below is a guide on how to remap keys on your Mac. When Apple designed the MacBook keyboards, they were probably thinking of which commands we will be using the most when they assigned shortcuts to specific functions, but as with everything else that is being used by millions of people, actual usage does not always align with intended purpose, so many default keys are left unused while some missing keys remain desired.

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