Player documentation for Frontier

When you start the game, you are safe from any attacks by other players
(there is only one exception - the Advocate of Evil - so avoid anyone
with that name!).  Normal players will not be able to attack you in
any room in the game.
To change this, you can register yourself as a player killer.  What
this means is that you will be allowed to kill other registered players
and also BE KILLED by registerd players.  If you register, the only place
where you can be safe from attack is within the town (an area that is
always 'attack-free' against players).
The only person who can remove this registration mark is Death himself.
See Also:  dying