visible bell definition communications
(Or "visual bell") A program option (whether in a terminal program, termcap
setting, or as a stand-alone
program) which outputs the bell character code
as a visual signal (e.g., a flashing status bar or menu bar).
Generally intended for deaf or hearing-disabled users who couldn't hear the normal auditory beep; also widely used by users who simply don't want their machines feep
ing at them or disturbing other users.