Asus G750JX - Manual (Page 33)

Notebook PC E-Manual 
Three-finger gestures
Drag and drop
Select an item then press and hold the left button. Using your other
finger, slide down the touchpad to drag and drop the item to a new
location.
Swipe up Swipe down
Swipe three fingers upward to
show all running applications.
Swipe three fingers downward to
show the Desktop mode.