Ok. here is how I understand it .....
We were using this feature by default:
Inactivity/Cookie Based - once a user has been inactive for a certain amount of time (the value of the cookie timeout option) all threads and forums are considered read. Individual threads are marked as read within a session via cookies. It was set for 900 seconds or 15 minutes.
This is what I am trying:
Database (automatic forum marking) - this option uses the database to store thread and forum read times. This allows accurate read markers to be kept indefinitely.
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