Chapter 1. Getting to know your computer
Hotkeys
You can access certain system settings quickly by pressing the appropriate hotkeys.
: Mutes/unmutes the sound.
: Decreases the volume level.
: Increases the volume level.
Closes the currently active 
: window.
Refreshes the desktop or the 
: currently active window.
Enables/disables the touch 
: pad.
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Enables/disables Airplane mode.
Displays all currently active apps.
Turns on/off the backlight of the LCD screen.
Toggles the display between the computer and an external device.
Decreases the display brightness.
Increases the display brightness.
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