Samsung NP680Z5EX03US 사용자 설명서

This function is the same as the scroll area of the Touchpad.
If you place two fingers over the Touchpad and move them up, 

down, left or right, the screen is scrolled up, down, left or right 

accordingly.

or

If you place two fingers over the Touchpad together or apart, the 

current image or text is zoomed in or out.

Zoom-out

Zoom-in

If you place your finger on the right edge of the touch pad and 

drag your finger toward the center, the Charms menu appears. 

Place your finger at the edge of the top area on the touch pad and 

drag your finger toward the center, and the menu of the currently 

running App appears.