What have you tried? This is possible to do via a plugin.
This can also be done by using Mark as unread for all option in the topic tools dropdown, it will mark the topic unread for everyone without making a new reply to it.
Mark as unread for all
Not at the moment without a custom plugin.
Thank you very much, this seems to have done the trick
Is it possible to show just one reply from a topic. I know how to go to one specific answer in a topic by adding slash number of reply. But it shows all replies. What I want is to filter just the desired reply.
@ckubs Excellent, I'm glad that went well!
Yes, a locked topic does not stop users from upvoting/favouriting the post.