Asus N75SF User Manual page 52

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 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.
52
Zoom out
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