http://jabber.org/protocol/amp A node for all Advanced Message Processing conditions and actions supported by an entity. XEP-0079: Advanced Message Processing http://jabber.org/protocol/commands A node for all ad-hoc commands provided by an entity. XEP-0050: Ad-Hoc Commands http://jabber.org/protocol/muc#rooms A node for discovery of the rooms in which a user is an occupant. XEP-0045: Multi-User Chat http://jabber.org/protocol/muc#traffic A node for discovery of the namespaces that are allowed in traffic sent through a room. XEP-0045: Multi-User Chat pubsub/nodes A "meta-node" for all pubsub nodes hosted by a publish-subscribe service. XEP-0060: Publish-Subscribe x-roomuser-item A node by which a user can discover his or her reserved room nickname. XEP-0045: Multi-User Chat