Dell XPS 18 (1810, Early 2013) - Manual (Page 24)

Finger gestures Allows you to:
Zoom in
Touch the display with two fingers
Increase the zoom level of an image
and then move the fingers apart. or web page.
Rotate
Touch the display with two or more
Rotate an object by 90 degrees.
fingers and then move the fingers in a
clockwise or counter-clockwise arc.
For more information on using Windows 8 Start screen, see
http://support.dell.com/windows8 and
http://windows.microsoft.com/en-US/windows-8/get-started as
well as touching the Dell Getting Started with Windows application (on
the Metro screen).
24 │ Using Your Computer