Alt
Short for Alternate, Alt is a modifier key located
on both sides of the spacebar key on IBM compatible computer keyboards.
In the picture to the right, is an example of what this keyboard key may look
like. This term may
also be used to describe a key combination such as
the below example.
The above combination means press and hold on the keyboard CTRL, ALT, and DEL all at the same time to reboot the computer or open the task manager window.
Users more familiar with the Apple Macintosh computers can relate this key to the Option key.
Also see: CTRL, Keyboard definitions, Modifier key, Option key