Sony PCG-SRX99 VAIO User Guide (primary manual) User Manual page 12

Guide mode
The Jog Dial control window is in the guide mode when software is in use and the software window is active. Depending on
the software you are using, you can select items from the displayed list using the Jog Dial control. Some Sony software
applications have two modes in List View, Simple Menu, and Full Menu. You can switch the mode by pressing the Shift key
while turning the Jog Dial control.
Using guide mode
The Jog Dial control window displays the Jog Dial control's function.
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