Of course (ill try to do my best
)
$chan(#) is a mIRC identifier - it has a few properties, like
.topic$chan(#).topic will return the topic of the channel between the parentesis.
You can find the rest of the properties in mIRC's help file, along with a better explanation by typing
/help window identifiers while on mIRC.
I hope this turns out understandable :P
Zyzzy.
BTW - post above is edited