100 message Entering a room Inform user that any occupant is allowed to see the user's full JID 101 message (out of band) Affiliation change Inform user that his or her affiliation changed while not in the room 102 message Configuration change Inform occupants that room now shows unavailable members 103 message Configuration change Inform occupants that room now does not show unavailable members 104 message Configuration change Inform occupants that a non-privacy-related room configuration change has occurred 110 presence Any room presence Inform user that presence refers to one of its own room occupants 170 message or initial presence Configuration change Inform occupants that room logging is now enabled 171 message Configuration change Inform occupants that room logging is now disabled 172 message Configuration change Inform occupants that the room is now non-anonymous 173 message Configuration change Inform occupants that the room is now semi-anonymous 174 message Configuration change Inform occupants that the room is now fully-anonymous 201 presence Entering a room Inform user that a new room has been created 210 presence Entering a room Inform user that the service has assigned or modified the occupant's roomnick 301 presence Removal from room Inform user that he or she has been banned from the room 303 presence Exiting a room Inform all occupants of new room nickname 307 presence Removal from room Inform user that he or she has been kicked from the room 321 presence Removal from room Inform user that he or she is being removed from the room because of an affiliation change 322 presence Removal from room Inform user that he or she is being removed from the room because the room has been changed to members-only and the user is not a member 332 presence Removal from room Inform user that he or she is being removed from the room because of a system shutdown