Anyway, I added a comment under History. 

What I didn't do first was log in, so it came up as a whole load of numbers instead of Cipher.  (Obviously I still have an ego part of me that wants a bit of credit sometimes - sorry if I sound vain, but I'm working on it!!)

What I did was I logged in and then reposted the article.

So then it looked as if I had just copies this big-number-named person's stuff.  Which I didn't. 

I found a place to write an explanation (editor's notes or something), so I've said as much up there.

Anyway, my apologies.  I hope this doesn't confuse or irritate anyone - or stuff up cyber-copyright or whatever.  I'm new here and just trying everything out and hopefully adding a bit along the way.  Please forgive my errors as I learn how to do things.