To track discussions as an instructor I want to be follow up new questions and replies for a course. Sometimes I know a co-instructor has already handled questions, sometimes i have already seen questions through mail notificiations. Currently I have to go into each post for which I already knwto mark it as read. I can't find a way to do this from the topic list screen. I can't find a mark all read control???

This is also problematic for the dashboard: I can not use it as an indicator of discussions I have to react to, it always shows a number of old posts as "unread".