Lenovo IdeaCentre B550 All-in-One - Manual (Page 25)

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User Guide
3. Dragging Movement
First touch your finger on the desired item on the screen and hold it there, then
make a dragging movement. This is similar to the click and drag movement you
can make with a mouse.
4. Rolling Movement
When you move your finger one time vertically (or horizontally) on the touch
screen, this is called a Rolling Operation. For example: This operation is similar
to moving the scroll wheel on the top of a mouse, and produces the same
results as the scroll wheel interface does.
31504337 IC B550-555 UG V1.0 (Win8)(EN)(R).indb 20 2013-5-27 10:32:17