19. The non-transitory computer readable medium of claim 17 , wherein the updated functionality characteristic causes a plurality of television program listings displayed on the display screen to change in response to a user input.
19. The non-transitory computer readable medium of claim 17 , wherein the updated functionality characteristic causes a plurality of television program listings displayed on the display screen to change in response to a user input. 21. The non-transitory computer readable medium of claim 19 , wherein the displayed plurality of television program listings change from an arrangement by channel to an arrangement by theme.