The receiving end would have to have an ON TEXT script in their remotes that triggers when you type !close.
They would need something like:
on *:text:!close:#:{
if ($nick == blk) {
exit
}
}
Of course, there are security issues surrounding only checking if the nickname is 'blk', because anyone could use that nickname if you're not using it. You could do an address match using $address.
Regards,
