What is the difference between the Auto Program function and the Digital Channel Add function?

The difference between the Auto Program function and the Digital Channel Add function is:

• The Auto Program function automatically sets up the channel list for the TV for all receivable channels for the current TV input. Digital channels not received during the Auto Program function will be deleted from the tuner memory.
  If you need more information, refer to Can I add missing channels by doing an auto scan or program?
• The Digital Channel Add feature allows you to individually program newly received digital channels while preserving digital channels already stored in the tuner memory. This feature is available on TVs with an internal ATSC tuner.

Refer to the owner's manual supplied with your TV for specific information on the features available in your TV. Manuals are posted on your model support page.