Called on both server and client when a player has been (re)authenticated by UCL.

Called on both server and client when anything in ULib.ucl.users, ULib.ucl.authed, or ULib.ucl.groups changes.

Called on server whenever a ULib command is run, return false to override and not allow, true to stop executing callbacks and allow.

Called on both client and server when a player entity is created.

Called within one second of a player changing their name.

Called whenever one player is about to target another player.

Called whenever one player is about to target another set of players.

Server hook.

Called on both client and server when a replicated cvar changes or is created.