Dell Inspiron 14 (N4030, Mid 2010) - Manual (Page 30)

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Using Your Inspiron Laptop
Touch Pad Gestures
Zoom
Allows you to increase or decrease the magnification of the screen content. The zoom feature
includes:
One finger zoom — Allows you to zoom in or out.
To zoom in:
To zoom out:
Move a finger up in the zoom
zone (extreme left of the touch
pad).
Move a finger down in the zoom
zone (extreme left of the touch
pad).