The most widely used chat program is called Internet Relay Chat, Some systems (particularly UNIX workstations and Windows PCs) may have an IRC client program, in which case you merely type the command irc or click the IRC icon to get on it.

• 最常用的Chat程序是Internet Relay chat (IRC),有些系统(特别是UNIX工作站和Windows PC有一个IRC客户程序，只须键入irc命令，或单击IRC图标就可联系上。