help/users/privmsg

   1 PRIVMSG <nick|channel> :message
   2
   3 PRIVMSG will send a standard message to the
   4 user or channel specified.
   5
   6 PRIVMSG supports the following prefixes for sending
   7 messages to specific clients in a channel:
   8
   9 @ - channel operators only
  10 + - channel operators and voiced users
  11
  12 The nick can be extended to fit into the following
  13 syntax:
  14
  15 username@servername
  16
  17 This syntax is used to securely send a message to a
  18 service or a bot.