“To temporarily silence bucklespring, for example to enter secrets, press ScrollLock twice (but be aware that those ScrollLock events are delivered to the appli

“To temporarily silence bucklespring, for example to enter secrets, press ScrollLock twice (but be aware that those ScrollLock events are delivered to the application); same to unmute. The keycode for muting can be changed with the -m option. Use keycode 0 to disable the mute function.” — the paragraph after the section quoted in my OP.