With the feature of mutiple servers per mIRC process, it would be nice to see a command to be able to get the list of CONNECTED servers, like $chan(%i) gets the currently joined channel(s). This would also have to be added to $chan.
$actserver(0) = number of servers connected to
$actserver(1) = equiv to current $server
$actserver(2) = second server currently connected to
$chan(1,1) = active server 1 channel 1
$chan(1,0) = number of channels joined on active server 1
$chan(2,0) = number of channels joined on active server 2