Added in 1.5
/msg <nick|#channel> <message>
Sends a message to a nick or a channel.
If the message is to a nick and "Open Window on /msg" option is enabled, a private window with that nick will be opened if necessary.
Parameters
<nick|#channel> - Nick or #channel to message.
<message> - Message to send.
Example
;Send "Hello World!" to #channel /msg #channel Hello World! ;Send "Hello World!" to Nick /msg Nick Hello World!