Like on a email, for the unread replies and such. That way you don’t have to read all of them, and they don’t clutter up so bad in your replies box.
You can do “Mark all messages as read” after you read the ones you want to read. That could work.
You can also delete them by checking the boxes and clicking delete.
That’s what he is suggesting. He isn’t talking about Private Messages, but the unread replies that you can see by clicking “Show new replies to your posts.”
wow,to think I never really paied attention to that button