Highlight the key.

The Tab key is used in documents to move the cursor over to the right to a pre-set point. This is especially used in word processing to line up text vertically.

Another use of the tab key is to move the focus on the computer screen through a series of buttons or text boxes or other objects. By holding the ALT key down while you press the TAB key, you can rotate through each of the open windows on a Windows computer.