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Double tap – touching the surface twice with your fingertip
allows you to zoom in/out the webpage or a map. Double
tap also allows you to zoom in/out the image while viewing
it.
Pinch – gripping the touch screen surface between your
index finger and thumb allows you to zoom in/out the
image. This gesture is very useful while viewing maps or
photos.
STATUS AND NOTIFICATION BAR
Notifications that appear at the top of the screen (status
bar) notify you about certain features of the device (missed
phone calls, alarm clock, WiFi enabled, unread message,
new email, etc). See the illustration below: