IRC Servers sends you messages that are identified only by a number, called nummeric raws. There are a large number of those raw events, far too many to go into here. The format of the raw event definition in mIRC is: raw <numeric>:<matchtext>:<commands> You can hide the default output with e.g. raw 352:*:haltdef Below you can see the most common numerics. For more detailed information take a look into the RFC 1459. Away 301 - [nick] :[away] 305 - :You are no longer marked as being away 306 - :You have been marked as being away Errors 401 - [nick] :No such nick 404 - [channel] :Cannot send to channel 405 - [channel] :You have joined too many channels 406 - [nick] :There was no such nickname 421 - [command] :Unknown command 431 - :No nickname given 432 - [nick] :Erroneous Nickname 433 - [nick] :Nickname is already in use 442 - [channel] :You're not on that channel 443 - [nick] [channel] :is already on channel 467 - [channel] :Channel key already set 471 - [channel] :Cannot join channel (+l) 473 - [channel] :Cannot join channel (+i) 474 - [channel] :Cannot join channel (+b) 475 - [channel] :Cannot join channel (+k) 482 - [channel] :You're not channel operator Invite 341 - [channel] [nick] Join 324 - [channel] +[modes] 329 - [channel] [time] 353 - [@|+|=] [channel] :[names] 366 - [channel] :End of /NAMES list. Logon 001 - :Welcome to the Internet Relay Network, [nick] 002 - :Your host is [server], running version [version] 003 - :This server was created [date] at [time] 004 - [server] [version] [usermodes] [chanmodes] Misc 381 - :You are now an IRC operator Motd 372 - :- [text] 375 - :- [server] Message of the day - 376 - :End of /MOTD command Topic 331 - [channel] :No topic is set 332 - [channel] :[topic] 333 - [channel] [nick] [time] Who 315 - [nick] :End of /WHO list. 352 - [channel] [identd] [host] [server] [nick] [H|G][*][@|+] :[hops] [fullname] Whois 311 - [nick] [identd] [host] * :[fullname] 312 - [nick] [server] :[server info] 313 - [nick] :is an IRC operator 317 - [nick] [seconds] [signon] :seconds idle, signon time 318 - [nick] :End of /WHOIS list. 319 - [nick] :[channel] 330 - [nick] [authnick] :is authed as 338 - [nick] [user@host] [ip] :Actual user@host, Actual IP Whowas 314 - [nick] [identd] [host] * :[fullname] 369 - [nick] :End of WHOWAS