fairchijisback and tradergrader, I and many others really appreciate you taking your valuable time to explain all this. For me it's a bit like learning another language, much easier when people speak slowly and in simple sentences. (For anyone who doubts this, try learning the noble German language as an adult.)

You and Eileen and others provide an invaluable service, out of pure generosity as far as I can tell, because you could just hoard shares and information and not bother to help anyone else.

Thank you, much appreciated, and Auf Wiedersehen.

Pauline