Not only is the same key distributed with all PDPs, VAXen, (even PDP-8s!), but any round key will work: a friend of mine uses the key of his bicycle lock, and I've seen red plastic keys that say "d|i|g|i|t|a|l" on them, and have no notches at all. John Owens ...!{ {duke mcnc}!ncsu!uvacs houxm brl-bmd scgvaxd }!edison!jso