LG HU80KSW-EU Owner's Manual page 76

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You can use the same functions as the Magic Remote's pointer and
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arrow keys.
You can adjust the volume or make other adjustments without using
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the remote control.
You can open an app installed on your Projector or configure settings
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for functions such as switching input.
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The app's screen and functionality are subject to change without prior notice.
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Available features may differ depending on your country and OS.
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Description
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