Some A/V receivers let you view system information and menus on your TV screen. Some use a GUI (Graphical User Interface) for easy remote point-and-click control via on-screen menus and icons. An alternative approach is to display menus and icons on a remote's built-in LCD screen.
An on-screen display (abbreviated OSD) is an image superimposed on a screen picture, commonly used by modern televisions, VCRs, and DVD players to display information such as volume, channel, and time.