Asus R401JV - Manual (Page 55)

Notebook PC User Manual 55
To enable continuous scrolling, hold your fingers on the edge of
the touchpad when moving from up to down/left to right and vice
versa. The mouse pointer changes to a double-headed arrow pointer
when continuous scrolling is activated.
Scrolling - Using two fingers on the touchpad, you can scroll
through lists vertically and horizontally.
Put two fingers on the touchpad then turn in a circular motion,
either clockwise or counterclockwise, to rotate an image.
Rotating - Rotating images clockwise/counterclockwise is done on
the touchpad using the pinch gesture.
Spread apart/bring together two fingers to zoom in/out.
Zooming - Using two fingers on the touchpad, you can enlarge or
reduce the view size of your selected image.