When a player types an invalid command/non existing command a custom message coms up overiding the original minecraft message. also when a player types a command he has no permission for, it comes up a custom message that also overides all other originlal messages. Also only show commands that the player has permission for, hiding everything else in shortcut menu when doing / so an example for regular players with no permission /ban &f[&cServer&f] &cSorry your not allowed to do this command. or an non existing command /tppp &f[&cServer&f] &cSorry this command is not valid. and when player does / it dont show all plugins insted of doing /pl or /plugins because they can see all plugins when doing the /