The function keys on your keyboard are the most powerful computer tools that you're not using. We're going to fix that.

Find out keyboard F1 to F12 Function keys do. Besides their specific functions, these keys are also used in combination with CTRL, ALT and Shift keys.

The Fn key is also known as the function key, and on Windows and most Mac keyboards, you'll find it located in the bottom-left corner of your keyboard.

Ask Rick: Using obscure keyboard function keys? A reader wants to use certain symbols on her keyboard, but cannot work out the key combinations to access them.