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General Interaction Techniques

Action Meaning
Swipe
Make a fast vertical or horizontal movement on the screen. A swipe is like a fast drag, but the finger lifts at the end of the motion. Make the swipe gesture to scroll with momentum; scrolling continues even after the finger is lifted.
Tap
Touch and quickly release; use to select or activate something.
Double tap
Two taps in quick succession. This is used for zooming.
Pinch
Press a thumb and finger on the screen and drag them together or away from each other. This is most commonly used for zooming.
Hold
Touch, wait and release.
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