Modes Users Can Set

• D (Deaf) - Client won't see any channel messages/text
• G (soft callerid) - Client won't get private message when the source doesn't share the same channel as the target

• g (callerid) - See CallerId

• i (invisible) - Client is invisible to /who and /names #channel (unless you share the channel)
  • by default users are set +i

  • this does not hide your channels in /whois (that is dependent on ChannelModes)

• w (wallop) - Client may receive wallops

Modes Not Set By Users

• R (Registered) - Client is identified to NickServ

• l (local Operator)
• o (global Operator)

Modes available to Operators

• S (God) - God mode - chanop-like status everywhere and a bit of extra info shown in whois etc
• b (Bots) - Notices regarding possible spambots
• c (conn) - [Dis]connection notifications
• f (full) - Notifications when a class is full
• k (kills)
• n (nchange) - Follow nick changes
• r (reject) - Notifications of rejected clients in valid username
• s (servernotice)
• u (unauth) - Notifications of connections that don't fit an auth block
• y (spy) - whois/stats/channel creation notifications
• z (operwall)

Unused

• C (Server) - Server only
• a (Admin)
• d (debug) - Debug information relating to the ircd
• x (external)