Acer Aspire S3-391 - Manual (Page 8)

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Hotkeys
The computer employs hotkeys or key combinations to access most of the
computer's controls like screen brightness and volume output.
To activate hotkeys, press and hold the <Fn> key before pressing the other
key in the hotkey combination.
Hotkey Icon Function Description
+ Communication
Enables/disables the computer’s
communication devices.
+ Sleep Puts the computer in Sleep mode.
+ Display toggle
Switches display output between the
display screen, external monitor (if
connected) and both.
+ Screen blank
Turns the display screen backlight off
to save power. Press any key to return.
+ Touchpad toggle Turns the internal touchpad on and off.
+ Speaker toggle Turns the speakers on and off.
+ < > Brightness up Increases the screen brightness.
+ < > Brightness down Decreases the screen brightness.
+ < > Volume up Increases the sound volume.
+ < > Volume down Decreases the sound volume.
+ Home Move to the beginning of a file.
+ End Move to the end of a file.