Sorry I stirred up a hornet's nest on this one.
Trevor, I apologise to you and to anyone else I offended. You and others have a perfect right to start threads asking for hints to clues rather than the answers. To be honest, I would respect that if I were replying directly to one.
I'm not usually combative or confrontational. But drink had, on this occasion, been taken. And I'm an irascible 50-something who sometimes gets the bit between his teeth, not always rationally, when I perceive that certain rights and wrongs have been committed.
I'll continue posting from time to time, but try harder to respect fellow posters and to recognise that just as I have a right to do or not do something, so do they.
I think I need to lighten up a bit and possibly get out more.