IIRC, the systray tip text is "mIRC <your titlebar text, if any>".
If you don't want to use/manipulate the titlebar for other ends - apparently you do not - you could do something like
on *:start: updatetitlebar
on *:connect: updatetitlebar
on *:disconnect: updatetitlebar
alias -l updatetitlebar { titlebar $status - $network $iif($status != disconnected,$+([,$server,])) }Edit: Of course that's of no use in a multi-server setup
