Sony PCG-GR390K - Manual (Page 20)

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Right-click Press the right button once. In many applications, this action
displays a shortcut menu of context-sensitive choices.
Drag Slide one finger while pressing the left button.
Scroll Move your finger along the right edge of the touchpad to
scroll vertically. Move your finger along the bottom to scroll
horizontally. (The scroll function is available only with
applications that support a touchpad scroll feature.)
✍
See Mouse Properties for information on touchpad features, such as clicking both
buttons simultaneously, adjusting touchpad speed, and Easy Launcher functions. To
access Mouse Properties, open the Start menu, point to Settings, Control Panel, and
then click the Mouse icon in the Control Panel.
Action Description