* multi pxo api
(cherry picked from commit 9af26da728a19b9d6c890968a314e8e56ecc1ddf)
* multi pxo help api
(cherry picked from commit f4df704576ddb648e9c486907b07ae172c859feb)
* minor fixes
* not extern
* break out chat message data into a table
* address some feedback
* return empty strings if not in multi
* use GetChannelByUser() instead
* once more with feeling
* correct documentation
