Samsung LT23A350ND-ZA - Manual (Page 23)

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English
● Deselect All : Deselect all the selected channels.
N Deselect All apppears only when you have selected one or more channels.
● Select All : Select all the channels in the channel list. To use, choose Select All
in the Options menu, and then press ENTER E . All channels are selected and a
check appears by each channel. You can then apply one of the other options on
the Options menu to all the selected channels.