AOC Q27P3QW User Manual page 16

Clear Vision Demo
1. Press and hold "<" button for 5 seconds to activate the Clear Vision Demo, and a message of "Clear Vision Demo: on"
will be display on the screen for a duration of 5 seconds. Press Menu or Exit button, the message will disappear. Press
and hold "<" button for 5 seconds again, Clear Vision Demo will be off.
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