keyboard_clearstate(3) on Linux
The text bffd672e50ee, 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.
reset the state of all keys when in raw keyboard mode