Ian: Hello. I apologise for not previously acknowledging your later comments.
My reason for posting this question was because I had, earlier, posted another question - which was answered, but when I returned to acknowledge that answer it (the answer) had disappeared !
Thus the current question, as I had hoped that I could reverse the 'disappearance'.
I appreciate that I can hide/reshow my own input - but not others' inputs. Or have I got this wrong ?
Hopefully this extra detail will help to explain my later posting of a further (but different) question - only to see someone 'flag' and 'close' that later (but different) question as being a 'duplicate' !
Thanks anyway.