Usage: `/QUERY nick'
With this command you can open a Query window. From here, you can PING or WHOIS the other user, or you may inititate a 'DCC SEND' or 'DCC CHAT'. Starting a 'DCC CHAT' from this window will allow you to carry on a dialog with the remote user through the window.
Examples:
`/QUERY Hero'
Will open a Query window with user HERO.