此插件用于改善玩家的聊天体验。当玩家处在主世界时，玩家发言的信息前缀会多一个[主世界]，并且消息变为绿色，地狱、末地也同上。
This plug-in is used to improve the player's chat experience. When the player is in the overworld, the player's chat message will be prefixed with one more [overworld], and the message will turn green, and the same goes for nether and end.