Asus Eee PC 1000HE - Manual (Page 36)

3-12 Chapter 3: Getting Started
Sun Down Icon (F5): Decreases the display
brightness.
Sun Up Icon (F6): Increases the display brightness.
Crossed Screen Icon (F7): Turns off the display
backlight.
LCD/Monitor Icons (F8): Toggles between the Eee
PC’s LCD display and an external monitor in this
series: LCD Only -> CRT Only (External Monitor) ->
LCD + CRT Clone -> LCD + CRT Extend.
LCD + CRT Clone mode only supports a maximum resolution of
1024 x 600 pixels.
Set your Eee PC to High Performance or Super Performance
mode if you want to use a higher resolution with a connected
external monitor.
Connect an external monitor before booting up the Eee PC.
Task Manager Icon (F9): Initiates the Task Manager
to view the application process or terminates
applications.
Crossed Speaker Icon (F10): Mutes the speaker.
Volume Down Icon (F11): Decreases speaker
volume.