Lenovo IdeaCentre B540 User Manual page 26

7. The recognition of touch gestures by this product can be influenced by the
following factors:
• Touching the correct place on the screen.
• The speed of movement.
• The time interval from when the screen was last touched.
Note: To learn accurate hand gesture operations, the user can consult this
manual and also the related Windows help content.
8. The touch screen does not function in Rescue System mode.
9. The touch screen also does not function during the startup process, and in
Sleep mode or Safe mode.
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User Guide