How to exclude boards in an URL?

[Dwev]

I want to construct a URL that excludes certain boards.

In this case it will start with https://xxxx-xxxx.com/index.php?action=unanswered but that one shows all boards with unanswered posts.

I'm pretty sure that there's a way to exclude them by adding something after the URL above, doesn't somebody know how to do this?

Thanks in advance.

[Aleksi "Lex" Kilpinen]

Something like /index.php?action=unread;boards=1,2,4,5 might work.
Though, this doesn't work by excluding boards, it works by only including the specific boards mentioned.

[Kindred]

<?php ssi_recentTopics($num_recent = 8, $exclude_boards = null, $include_boards = null, $output_method = 'echo'); ?>