Samsung PN51E6500EFXZA - Manual (Page 18)

steps:
1. On the
Channel screen, select the All
category.
2. Select a grayed out channel in the
All
category. A c mark appears to the
left of the channel.
N You can select more than one
channel.
N If you re-select a channel you
selected, the c mark disappears.
N A gray colored channel indicates