Справочник Пользователя для Samsung NP275E5EK01US

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 on the left edge of the touch pad and drag 

your finger towards the center to activate a previously operating 

program from among the currently running programs.