It is now just after 3 a.m. and my OH is chatting on phone with an overseas client. So here I am, reading new replies ...
Yes, now that I read back over this thread there does seem to have been additional words added to that post.
Not to worry, arthurk, I am sure your interpretations are correct for that b.c.
Perhaps the cybersnafflers nicked the ADD or EDIT or similar alert word to show a post had been modified.

JM .... OH still on phone ... its 3.21 a.m. I'm going to make a cuppa.