A function or menu item that can be used. If you look at the software you are using, you'll sometimes see some of the options appear in grey rather than black. These are not enabled and you cannot use the option. For example, if you are using a word processor and have not selected an area of text, the Copy and Cut commands in the Edit menu are shown in grey and cannot be used. If you select an area of text, look at the Edit menu again and you'll see these options now appear in black and have been enabled.
