"Mark All Topics Read" Button?

This is just a suggestion for the forum. Perhaps somehow there could be a "Mark All Topics Read" button? As far as I know, there isn't one, but maybe it's hiding on me or something. I just think it would be easier for people like me who have to go through and click on all the bolded topics in order to get the pretty check marks next to each thread. Just thought I'd share my idea. (And if there is already a button like this, please let me know! Thanks!)