Asus Eee PC X101 - Manual (Page 17)

ASUS Eee PC 1-9
Touchpad Usage
Multi-finger gesture input (on selected models)
Two-finger zooming in/out - Moving two fingertips apart or together on
the touchpad to zoom in or zoom out. This is convenient when viewing
photos or reading documents.
Zoom out
Zoom in
Two-finger rotating- Fix one
fingertip on the touchpad and
make an arc with the other to rotate
the photo or the document you are
viewing. You can make a clockwise
or counterclockwise rotation based
on your needs.