Available Channel Modes

a info

Protected user - Cannot be de-opped or kicked

+a <nick>

b info

Channel ban

+b <nick>[!ident@host][#channel]

c info

Blocks coloured messages

+c

C info

Blocks CTCPs

+C

e info

Adds a ban exception

+e nick!ident@host

f info

Prevents message / notice floods

+f <*><lines>:<sec>

F info

Limits nickname changes

+F <nicks>:<sec>

G info

Network-specified word ban list

+G

g info

Ban a word from use

+g <word>

h info

Channel halfop

+h <nick>

i info

Channel is Invite-only

+i

I info

Invite exception

+I nick!ident@host

j info

Join flood prevention

+j <joins>:<sec>

J info

Prevents automatic rejoin when kicked

+J <secs>

k info

Sets a keyword which users must provide to join

+k <keyword>

K info

Sets channel to Knock-before-enter

+K

l info

Channel user limit

+l <number>

L info

Channel limit redirection

+L <#channel>

m info

Moderated channel (+v upwards can speak)

+m

M info

Only registered users may speak

+M

n info

No outside messages

+n

N info

Prevents nickname changes

+N

o info

Channel Operator

+o <nick>

O info

Network Staff only

+O

p info

Private channel. Hidden from WHOIS.

+p

P info

Blocks most ALLCAPS messages

+P

q info

Channel founder. Cannot be deopped or kicked

Cannot be set

Q info

Users cannot be kicked by ops

+Q

R info

Only registered users may join

+R

s info

Secret. Hidden from WHOIS and LIST

+s

S info

Strip colours from messages

+S

t info

Topic Lock (Only Channel Operators can change topic)

+t

T info

Prevents channel NOTICEs

+T

u info

Auditorium mode
AppliedIRC has enabled the ShowOps option

+u

v info

Voiced (can speak in Moderated channel)

+v

V info

Block INVITEs

+V