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round circle is displayed. Then, lift your nger off the touch screen. A context menu will be displayed,
where you can make selections.
Using the single-touch feature
The single-touch feature enables you to use only one nger at a time to interact with your computer.
Using the multi-touch feature
The multi-touch feature enables you to use one or two ngers to interact with your computer. For example,
you can zoom in, zoom out, scroll, or rotate on the touch screen with two ngers while browsing the Internet
or reading or editing a document.
Note: Dust buildup might cause problems for the touch function. Clean your monitor screen periodically
by doing the following:
1. Wipe the screen gently with a soft, dry brush or cloth.
2. Blow on the top left corner and top right corner to keep the touch sensors 1 clean.
Figure 8. Blowing the dust off the touch sensors
26 ThinkCentre User Guide