Blackberry RIM 850 Installation & Getting Started Manual page 61

Activate the backlighting by pressing the silver key
once. It will shut off automatically if you do not press
any keys or use the trackwheel for 20 seconds. Turn
off the backlighting manually by pressing the silver
key again.
Function screens
The functions list appears on the Home screen. To open a function's
screen, scroll to an icon and click the trackwheel (or, press the
underlined character in the function name).
Getting to know your handheld — Handheld components
Press
BACKSPACE
Press to return to the Home screen.
ESC
to return to the Home screen.
Installation and Getting Started Guide
61