Channel modes

The following channel modes are available in ircd-yeti:

Modes that control who may join

Mode	Name	Description
b	Ban	Prevents users from joining the channel based on nick!ident@host or extended ban match.
e	Ban exception	Allows users to bypass ban entries, based on nick!ident@host or extended ban match.
i	Invite only	Only users who have been /INVITE'd or match an invite exception may join the channel.
I	Invite exception	Allows users to bypass +i, based on nick!ident@host or extended ban match.
k	Key	Requires users to provide the channel key with the /JOIN command to join.
l	Limit	Sets the user limit for the cannel. Once reached, no additional users may join the channel.
r	Registered only	Only users who have authenticated with services may join the channel.
Z	TLS only	Only users who have connected via TLS may join the channel.

Modes that restrict messages

Mode	Name	Description
c	No colors	Blocks channel messages containing control codes/colors.
C	No CTCPs	Blocks CTCP messages addressed to the channel (ACTION CTCPS (i.e., /me) are still allowed).
m	Moderated	Prevents users without voice (+v) or higher from sending messages to the channel.
M	Moderated Reg	Prevents users who haven't authenticated with services from sending messages to the channel.
n	No external	Prevents users who are not on the channel from sending messages to the channel.
N	No notices	Blocks channel notices.
q	Quiet	Prevents users from sending messages to the channel based on nick!ident@host or extended ban match.
T	No multi-target	Attempts to block messages targeting multiple channels (e.g., /amsg).
u	Quit squelch	Squelches user PART and QUIT reasons, preventing them from being shown.
x	Reduce moderation	Messages that would normally be blocked by +b/q/m/M are instead sent to channel operators.

Modes that grant extra abilities

Mode	Name	Description
h	Half operator	Grants a user half operator status on the channel. Nicklist prefix: %
o	Channel operator	Grants a user channel operator status on the channel. Nicklist prefix: @
v	Voice	Grants a user voice status on the channel. Nicklist prefix: +

Modes that restrict channel visibility

Mode	Name	Description
p	Private	Marks a channel as private, preventing it from appearing in the channel listing.
s	Secret	Marks a channel as secret, preventing it from appearing in the channel listing and WHOIS.

Miscellaneous modes

Mode	Name	Description
D	Delayed joins	Enables delayed joins on the channel.
H	Hidden lists	Hides b/e/q/I list entries and associated mode channels from non-channel operators.
t	Op topic	Only (half)operator may change the channel topic using the TOPIC command.

Services/server-only modes

The following channel modes may only be set via services or a server.

Mode	Name	Description
d	Hidden users	Indicates there are still (delayed joined) hidden users present in the channel.
z	Persistent	Prevents the channel from being destroyed when the last user leaves.