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2.3.2 Press and Hold
You usually need to select the screen only once, however, some useful features can 
be accessed with combined touch screen selecting. Those are as follows:
Action Button(s)
Details
Continue 
pressing the 
button.
,
Touching the button on the map screen once 
changes the scale in one step. Continuously 
touching the button changes the scale 
sequentially.
,
Touching the button on the map screen 
once changes the point of view in one step. 
Continuously touching the button changes the 
point of view sequentially.
,
Touching the button on the map screen once 
rotates the map. Continuously touching the 
button rotates the map sequentially.
Touching the button on the keyboard screen 
once erases one character. Continuously 
touching the button erases several characters 
rapidly.