Players can enter System Commands into the chat console to execute certain actions. The chat console can be brought up in-game by pressing Enter (or players can simply start typing with the slash character) or, while on the main lobby, on the Chat's System tab.
The commands for normal play are:
Brief list of common system commands.
Send a whisper to a player.
Respond to a player's whisper. Playername will default to the previous whisperer.
Blocks a player from whispering you.
Unblocks a player from whispering you.
Ignores the messages and requests from a player.
Unignores the messages and requests from a player.
Toggle Do-Not-Disturb mode. While in DnD mode, you cannot receive whispers or party invites.
Join the "Looking-for-Group" channel.
Allows the user to claim promotional codes from anywhere in the game, even during a match.
Take a screenshot. The screenshots will be stored in your Windows "Documents" folder under "My Games\paladinslive\ChaosGame\Screenshots\Win32Console". (Win64Console if you are using 64bit)
Toggle the Frames-Per-Second indicator. You can also press F9 to toggle this.
Toggle an advanced frame time indicator.
Begin spectating in the Spectator Mode. If a game is not currently being played, you will be queued to spectate that player's next game. (by pressing ESC you'll go back to main screen)