...I don't know, I just wish TV manufacturers would just use the proper terminology, instead. For example, watching 720p on a 1080p is not "dot for dot" just as watching 1080p/i on a 720p is not "dot for dot," even if overscan is disabled.
/geek rant
Dot for dot is correct terminology for how a 1080p TV displays the 1080i signal from a Dish receiver. If you want to see the full guide from Dish on a 1080p TV, the Dish receiver should be set to 1080i and the TV to dot for dot (or the brand's equivalent). What happens to any TV signal on the way to that point is irrelevant, but it is the correct setting to fully dislay Dish's menus.