Dell XPS 17 (L702X, Early 2011) - Manual (Page 43)

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Using Your XPS Laptop
Zoom
Allows you to increase or decrease the
magnification of the screen content. The
zoom feature includes:
Pinch — Allows you to zoom‑in or zoom‑out
by moving two fingers apart or bringing them
closer together on the touch pad.
To zoom in:
Move two fingers apart to
enlarge the view of the active
window.
To zoom out:
Move two fingers close
together to reduce the view
of the active window.
Rotate
Allows you to rotate the active content on the
screen. The rotate feature includes:
Twist — Allows you to rotate the active
content using two fingers where one finger is
anchored and the other rotates.
Keeping the thumb in
place, move the index
finger in an arced direction
right or left to rotate the
selected item clockwise or
counterclockwise.