Marking a thread as read - how do you reverse this?

[dagrizz]

I inadvertently marked a thread as read but can't undo it; I'd like to be able to see the unread posts. I've been into account settings and can't find anything there. Anyone know how to do it?

Thanks

Graham

[kevinlms]

I don't think you can. I managed to make ALL of RMweb as read, by hitting the wrong button and found out the hard way that It's not something that can be undone.

[AY Mod]

It would be too much of a resource to cache everything that anyone has marked, just in case. It'll show unread from the next post once there's another post.