*c = Block messages containing mIRC color codes [o]
 *i = A user must be invited to join the channel [h]
 *k <key> = Users must specify <key> to join [h]
 *l <number of max users> = Channel may hold at most <number> of users [o]
 *m = Moderated channel (only +vhoaq users may speak) [h]
 *n = Users outside the channel can not send PRIVMSGs to the channel [h]
 *p = Private channel [o]
 *s = Secret channel [o]
 *t = Only +hoaq may change the topic [h]
 *G = Filters out all Bad words in messages with <censored> [o]
 *R = Only registered (+r) users may join the channel [o]
 *S = Strips mIRC color codes [o]