Mode Description
n No external messages.
t Only +o users can change topic.
s Channel will not be shown in /whois and /list
p Disables /knock
m Only opped/voiced users may talk in the channel.
i Invite only
c Stripps color from messages.
g Allow all members of the channel to invite other users.
z Messages blocked by +m, +b & +q are sent to Ops of the channel.
L Large Ban List (Opers only)
P Permanent (Opers only)
F Anyone may set forwards to channels with this mode.
Q Users cannot be forwarded to the channel.
C All CTCP messages, except ACTION, are disallowed.
O IRC Ops only
A IRC Admin only
T No NOTICE to channel allowed.
S Only users connected via SSL/TLS may join the channel.