Jail

Jail is a world that can be accessed via the command /server jail. It consists of two small floating islands in the void connected by a bridge, one of which is partially able to be mined and built on.

Two sets of signs in Jail say "Welcome to Jail. While your [sic] here you should reflect on why you might be here. If you need help please contact your friendly mod".

It's unknown if the Jail is ever used, but if so it is likely that players who have been banned or otherwise punished are sent there.

Players who have not been punished are able to leave freely with /server [server].

Jail
Server World