A very simple way to manage the gamemode of your players.
Secure your server from numerous players being in creative mode out of your control.
Basics
Ops use /gm <playername> to switch your players the ability to switch their game mode
Players use /gm to switch their own game mode
Advanced
Admins can control the list of players that can switch to creative mode using the RealGameMode/creativeplayers.txt file
Players that were in creative mode loose it when they join the serveur if they are not allowed to be in creative mode
Permissions (optional)
realgamemode.set : players having this permission can switch their creative mode and other player's creative mode switching capability as if they were op.
