Channel Modes

Mode
n Forces a user to be in the channel to PRIVMSG it
p Sets the channel as 'private'. Will not show up in /LIST
s Sets the channel as 'secret'. Will not show up in /LIST or in users /WHOIS
t Forces a user to have +o or +h to change the topic
m Makes a channel moderated. Only +ohv can talk
k [key] Sets a key on the channel
b [glob pattern] Bans matching [glob pattern] from joining the channel
e [glob pattern] Allows users matching [glob pattern] to bypass +b
i Sets the channel as Invite-Only
I [glob pattern] Allows users matching [glob pattern] to bypass +i
J [sec] Disallows a user from joining [sec] seconds after being /KICK'd
l [number] Sets the channel limit to [number]. Once the limit is reached, no more users can join
L [channel] When the channel is 'full' (from channel mode l), forward the user to [channel]
M Users must be registered to speak in the channel
c Blocks messages with control codes to the channel
S Strips control codes from PRIVMSGs/NOTICEs to the channel

Prefixes

Prefix Mode Title
~ q owner
& a protected
@ o op
% h half-op
+ v voice