API JoinPermanentChannel

Joins the specified chat channel; the channel will be rejoined after relogging.
Joins the channel with the specified name. A player can be in a maximum of 10 chat channels. In opposite to API_JoinTemporaryChannel the channel will be re-joined after relogging.
 type, name = JoinPermanentChannel(channelName [, password, frameID, hasVoice])
==Parameters==
(copy/paste from API_JoinChannelByName)
===Arguments===
:;channelName: - The name of the channel to join. You can't use the "-" character in channelName (patch 1.9)
:;password: - The channel password, nil if none.
:;frameID: - The chat frame ID number to add the channel to. Use Frame:GetID() to retrieve it for chat frame objects.
:;hasVoice: - (1/nil) Enable voice chat for this channel.
===Returns===
:;type: - The type of channel. 0 for a undefined channel, 1 for the zone General channel, etc
:;name: - The name of the channel (Ohklus: seems to be nil for most channels).
==Example==
(copy/paste from API_JoinChannelByName)
 JoinPermanentChannel("Mammoth", "thesane", ChatFrame1:GetID(), 1);