Description
bool 
ircg_channel_mode ( resource connection, string channel, string mode_spec, string nick)
     Set channel mode flags for channel on
     server connected to by connection. Mode flags
     are passed in mode_spec and are applied to
     the user specified by nick.
    
     Mode flags are set or cleared by specifying a mode character and
     prepending it with a plus or minus character,
     respectively. E.g. operator mode is granted by '+o' and revoked
     by '-o', as passed as mode_spec.