Question: what are the different types of function keys?
Answer: Function Key. A function key is one of the "F" keys along the top of a computer keyboard. On some keyboards, these range from F1 to F12, while others have function keys ranging from F1 to F19. Function keys may be used as single key commands (e.g., F5) or may be combined with one or more modifier keys (e.g., Alt+F4).