I think there are probably quite a few people who join and look in but don't post. I used to look in before I joined but got fed up of my screen being covered by a big box asking me to sign in, so I joined and continued to look in for a bit before I posted
I hope you now have your answer to 13 a, Delores.
I hope you've not been put off by this speculation. Apologies for any part I may have had in this thread going off track.