keyboard_setdefaulteventhandler(3) on Linux
The text b534a90e8916, as Debian 7 (Wheezy), Debian 6.0 (Squeeze), Debian 5.0 (Lenny), Debian 4.0 (Etch), Debian 3.1 (Sarge) shipped it. The page shows this text now.
define an event handler for keyboard events in raw mode