The arrow keys are controls for up, down, right, and left. You can use these keys instead of the mouse to move the cursor in a document, or in a game. You can also use these keys to scroll around a Web site.
When the Num Lock LED (light-emitting diode) on the keyboard is on, the numeric keys are enabled to function similar to those found on a basic calculator. When the Num Lock LED on the keyboard is off, the numeric keys are directional keys used during games or to move the cursor. Press the Num Lock key to lock and unlock the numeric key functions.
