Dell Chromebook 3100 Technical Manualbook page 8

Special keys
Enter Immersive mode, which hides the tabs and launcher.
Enter Overview mode, which shows all windows.
Decrease screen brightness.
Increase screen brightness.
Mute.
Decrease the volume.
Increase the volume.
Search applications and the web at the same time. On a Chromebook, this key is on the side, where the Caps Lock key
is normally located.
8 Chassis overview