When a topic has been finished, it should be set to "resolved". However, I currently do not see a button to do so.
I can only "hide" a topic, but it seems like this is more for spam issues. Like: "I do not want to see it again, put it out of sight." This is what I have then done in the past (as I could not mark it as resolved) with the result that people obviously did no longer see the topic and the answers so that they posted the same thing again.
It would be great, if this could still be fixed!