GESTURES FOR FREE-FORM SYSTEMS
These are common gestures used mainly in environments and new devices. To see some of these gestures in action, refer to Chapter 4.
HEAD
HEAD COCKED
The head tilts to the left or right without turning.
Possible uses.
Changing perspective on-screen; moving a cursor left or right.
TILT UP/DOWN
The whole head moves up or down but not up and down quickly (see Nod Yes).
Possible uses.
Changing perspective on-screen; moving a cursor or slider up or down; flipping a switch; scrolling up/down.
TURN LEFT/RIGHT
The head turns so that the face becomes a profile and remains there (see Shake No for a similar movement).
Possible uses.
Moving an avatar left or right; moving a cursor or slider left/right; scrolling left/right.
NOD YES
The head moves up and down in an affirmative movement. Note that this motion does not signify "yes" in certain parts of the world, such as the Middle East; in fact, it signifies the opposite.
Possible uses.
Choosing an option; rapidly scrolling up/down.
SHAKE NO ...
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