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Using the Fn Key
Pressing the Fn key affects three sets of keys: the function keys F1–F12, the embedded numeric keypad, and
certain modifier keys.
● It toggles the function keys between their control-button operation and their F1–F10 functions, asshown
in Table 3-9 (page 42) and Figure 3-7 (page 40).
● It selects the embedded numeric keypad on the right portion of the alphanumeric keys, as shown in
Table 3-10 (page 43) and Figure 3-8 (page 41).
● It changes certain control keys, including the cursor control keys, to page control keys, as shown in Table
3-11 (page 43) and Figure 3-8 (page 41).
Note: In Mac OS X, athird-party utility isneeded to implement user-programmable function key assignments.
Using the Num Lock Key
Pressing the Num Lock key affects two sets of keys: the embedded keypad and the rest of the alphanumeric
keys.
● It selects the embedded numeric keypad, as shown in Table 3-10 (page 43) and Figure 3-8 (page 41).
● It makes the rest of the alphanumeric keys functionless (NOPs), as shown in Figure 3-8 (page 41).
The Function Keys
Table 3-9 (page 42) defines the operation of the function keys.
Table 3-9 The function keys as control buttons
Control buttonKey name
Decrease display brightnessF1
Increase display brightnessF2
Mute the speakerF3
Decrease speaker volumeF4
Increase speaker volumeF5
Num LockF6
Switch between dual display and mirroring modesF7
Keyboard illumination controlF8
Decrease keyboard illuminationF9
42
Keyboard
Legacy Document | 2003-03-01 | © 2003 Apple Computer, Inc. All Rights Reserved.
CHAPTER 3
Devices and Ports