What are the HDMI Settings?

When you connect an HD DTA box to an HDTV, the HDMI setting will default to “Auto”, which means the setting will automatically adjust to the best resolution the TV has.  The user can adjust this setting manually to any of the following options by selecting Menu on the remote, then HDMI Setup:
1080i normal 480p (16:9)
1080i wide 480p (4:3)
720p normal 480i
720p wide