When a command processor establishes full-screen mode, VTAM® treats all devices as if the terminal user had entered the TERMINAL NOBREAK command. If the user specifies TERMINAL BREAK before a full-screen command processor is invoked, VTAM supports the BREAK mode before the command processor enters full-screen mode and whenever the command processor exits from full-screen mode. See z/OS TSO/E Command Reference for a description of the TERMINAL command.