Google ANDROID 2.3.4 - Manual (Page 24)

Android basics 24
AUG-2.3.4-105 Android User’s Guide
Using a trackball
If your phone includes a trackball (or similar navigating device you can use to select
items on screen), you may find some actions are easier using it than using your finger,
such as:
Opening an event in a crowded calendar
Selecting a link or form field on a web page
Selecting text to edit
Use the Trackball
S Roll the Trackball to select items on the screen.
The selected item is highlighted in orange.
S Pressing the Trackball is equivalent to touching the selected item with your
finger.
S Pressing & holding the Trackball is equivalent to touching & holding the selected
item with your finger, for opening context menus, starting apps, and so on.
Items that you select with the
Trackball are highlighted in orange.