http://www.netrover.com/~timt/cheats/z/zorkzero.html (Amiga Plus Extra No. 5/97, 05/1997)To put the bedbug to sleep, sing to it and it will trouble you no more.
Sit on Dimwit's favourite throne and snap your fingers to reveal a secret tunnel.
In the library, rub the armour three times to find something which may be useful to you.