Casio QV-4000 1 - Manual (Page 21)

GETTING ACQUAINTED
E-21
Using the Control Button
The control button is used to select menu items and execute
function. The following are the terms used in this manual to
describe control button operations.
Term
Rock
Click
Meaning
Use your thumb to move the control button up,
down, left, or right.
Press the control button straight down until it clicks,
something like a computer mouse.
Control button