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.

Ctrl + Alt + Del

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.