Dell Inspiron 11 (3147, Mid 2014) - Manual (Page 53)

Using Your Touchpad
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Two-finger zoom — Allows you to zoom‑in or
zoom‑out using two fingers.
Place two fingers on the touchpad and then move
them apart to zoom‑in.
Place two fingers on the touchpad and then bring
them closer to zoom‑out.
Rotate
Twist — Allows you to rotate active content, in
90‑degree increments, using two fingers.
Keeping the thumb in place, move the index finger in
an arched direction right or left to rotate the selected
item 90‑degree clockwise or counterclockwise.
Flick
Allows you to flip content forward or backward.
Move three fingers quickly to the left or right to flip
content backwards or forward.