GM commands are given to player having a GM level. You can obtain a GM level if it is necessary, if you are elected Game Master or if you become a Developer.
GM level 40 is a basic level access available to most of the developers. GM level 60 is a broader level of access available to game masters. GM level 80 is a wide level of access available to senior developers when there is particular need. Finally, GM level 99 gives all commands and is only available to people with local access.
Level 40: Developers
Broadcast to the whole server.
Broadcast to the map you are on.
Suicide your character.
Locate someone on a map, returns your coordinates if the person isn't on.
Spawns you to set points in major cities.
Warp yourself to a person.
Follow a player, including warping to him.
Disconnects a user from the server.
Returns list of logged in characters with their position.
Returns list of logged in characters with their party/guild.
Returns list of logged in characters with their position in a specifical map.
Returns list of logged in characters with their party/guild in a specifical map.
Like @who+@who2+who3, but only for GM.
Enables you to view other characters stats.
Heals a person to full HP/SP.
Hides you from monsters and most reporting functions.
Enables you to to jump randomly on a map (where you already are).
Warps you to your last save point.
Warp yourself to a certain map, at (x,y) coordinates.
Changes GM clothes color.
Changes your own hair style.
Changes own hair color.
Deletes all your items.
Sets your spawn/save/home point.
Send text to the GM log.
Send text to the GM log and local chat.
Level 50: Event Coordinators
Hides you from players.
Makes you visible again.
Spawns a monster in a certain amount, they will attack you if aggressive!
Summons a monster in a certain amount, they'll fight for you.
Level 60: Game Masters
Disable all wispers for a player
Enable all wispers for a player.
Shows Stats Of All Characters Online
Enables PVP on a map.
Turns PVP off on a map.
Sets the speed you can walk/attack at. Default is 150.
Kill all monsters in map (with drops).
Kill all monsters in map (without drops).
Check which characters are online from a characters IP address.
Store all your items.
Allow other players to hit you out of PVP.
Look up a skill by name.
Use a skill by ID.
Make another character killable.
Levels your character to specified level (adds to your level).
Raises your job level.
Mute a character.
Unmute a character.
Sets another persons base level.
Changes the sex of an online player (all characters on the account).
Remove items from a character.
Set another persons job level.
Give another character status points.
Gives another character skill points.
Resets another character's stats.
Resets another character's status.
Resets another character's skills
Resets a character back to when it was first created.
Saves the respawn point of another character.
Kill another character without hitting them.
Enable hitting a player even when not in PVP.
Warps a character to you.
Revives a character and heals him.
Warp another person to a certain map, at (x,y) coordinates.
Change status of your character.
Get all skills.
Sets GM stats to maximum.
Gives you job points.
Gives you skill points of desired amount.
To block definitively a player.
To unblock a player.
To ban a player for a limited time.
To unban a player.
To send a specified character in jail.
To discharge a prisoner.
Drop a players possessions on the ground.
Put a players possessions in storage
Iterate over players forward.
Iterate over players backwards.
People having more than GM level 60 are considered having enough knowledge to find the complete list of GM commands.