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
<Fn> + <F3> Communication
Enables/disables the computer’s
communication devices.
<Fn> + <F4> Sleep Puts the computer in Sleep mode.
<Fn> + <F5> Display toggle
Switches display output between the
display screen, external monitor (if
connected) and both.
<Fn> + <F6> Screen blank
Turns the display screen backlight off
to save power. Press any key to return.
<Fn> + <F7> Touchpad toggle Turns the internal touchpad on and off.
<Fn> + <F8> Speaker toggle Turns the speakers on and off.
<Fn> + < > Brightness up Increases the screen brightness.
<Fn> + < > Brightness down Decreases the screen brightness.
<Fn> + < > Volume up Increases the sound volume.
<Fn> + < > Volume down Decreases the sound volume.
<Fn> + <Pg Up> Home Move to the beginning of a file.
<Fn> + <Pg Dn> End Move to the end of a file.