Thanks for your reply, Dax.
That isn't really quite what I was looking for, because topics only appear in Unread in the following circumstances:
By default, topics are considered unread and will show unread counts 1 if you:
- Created the topic
- Replied to the topic
- Read the topic for more than 4 minutes
Or if you have explicitly set the topic to Tracked or Watched via the in each topic.
I was hoping for something without those constraints. Basically, a button near the top of each page saying "Mark thread as read", "Mark forum as read", etc. It's a super convenient way of clearing away the stuff from the past you aren't interested in.
Anyway, it's just a suggestion - you'll know whether it's doable or not!