2-6 Operating Your ComputerFunction KeysOn the top row of the keys are the function keys: F1 to F12. Function keysare multi-purpose keys that perform functions defined by individualprograms.Fn KeyThe Fn key, at the lower left corner of the keyboard, is used with anotherkey to perform the alternative function of a key. The letter “Fn” and thealternative functions are identified by the color of blue on the keytop. Toperform a desired function, first press and hold Fn, then press the other key.Hot KeysHot keys refer to a combination of keys that can be pressed any time toactivate special functions of the computer. Most hot keys operate in a cyclicway. Each time a hot key combination is pressed, it shifts the correspondingfunction to the other or next choice.You can easily identify the hot keys with the icons imprinted on the keytop.The hot keys are described next.Key DescriptionSwitches the wireless LAN radio on and off.Switches the night vision feature on and off for viewingthe display when using night vision goggles (optional).Decreases the sound volume.Increases the sound volume.