Samsung UN46ES6100GXZE - Manual (Page 32)

Lock a channel so that the channel
cannot be selected and viewed.
N This function is available only when
the Channel Lock is set to On .
●
Rename Channel
(Appears only if you have selected an
analog channel.)
Lets you assign a name of up to five
characters to an analog channel. For
example, Food, Golf, etc. This makes it
easier to find and select a channel.