Do you ever want to select text and do things with it like you do one your computer?
 
To highlight text on a sidekick, hold shift and use the trackball or d-pad to select text. Then, you can use all the same codes you use on your computer to edit text on your sidekick.
 
for example,
 
press menu (3 lines) and C at the same time to copy, or v to paste. Even Z to undo! its great!