&AUTH 1 SERVER MESSAGES: messages from the authentication slave
&SERVICES 2 SERVER MESSAGES: services joining and leaving
&LOCAL 2 SERVER MESSAGES: notices about local connections
&HASH 2 SERVER MESSAGES: hash tables growth
&SERVERS 2 SERVER MESSAGES: servers joining and leaving
&NUMERICS 2 SERVER MESSAGES: numerics received
&CHANNEL 2 SERVER MESSAGES: fake modes
&KILLS 2 SERVER MESSAGES: operator and server kills
&NOTICES 4 SERVER MESSAGES: warnings and notices
&ERRORS 2 SERVER MESSAGES: server errors
