Thanks for explaining to K., Sudo. That's exactly what I did, what is known as a "push", pushing up a topic so that it appears again at the top of the chronological list. I just added at the end : "[edit to push up]"

I did this because there is a fundamental flaw with Yuku, at least in the sort of staggered presentation we use within a thread : opening a given post, you can only see the posts placed hierarchically below, and when I gave a link to this old post, I found there was no way to climb back up again ! Since it's an enormous topic (it drifts very quickly away from the original topic, as usual, and gets into a heated discussion abou Lyonesse, don't ask me why...), I felt I had to make it fully accessible again.