Mark as read for entire forum

Would it be possible to get an "All read" button on the main page of the forum? For me, Banknotes and Numista banknote catalog are not interesting and when I want to mark those as read I need to open the subforum and click on All read. It would be convenient that when I'm done browsing the fora I'm interested in I can mark the rest of the fora as read.

P.S. I know that it's just a few extra clicks and most people will find it ridiculous, but for me it's more efficient Also, I know that I can just leave them unread, but I don't want that.