LG CineBeam 4K HU70LS Owner's Manual page 62

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Checking and editing [QUICK ACCESS]
Press and hold the number 0 button on the remote control.
The [QUICK ACCESS] edit screen appears.
Selecting a number that has already been registered allows deregistering
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it.
When you select a number that has not been registered, items that can
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be registered will be shown.
An item that has been registered to a different number is indicated with
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a check mark.
You can view a brief instruction for this function.
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