A keyboard shortcut is a way to invoke a function in OS X by pressing a combination of keys on your keyboard. Learn about common OS X keyboard shortcuts. Using keyboard shortcuts To use a keyboard shortcut, press a modifier key at the same time as a character key. For example, pressing the Command key (it has a  symbol) and then the "c" key copies whatever is currently selected to the Clipboard. This is also known as the Command-C keyboard shortcut. You can see the keys that map to many ...