Peter ...... Many thanks for having given me 'Best Answer' and having now explained matters, more lucidly.
I am of the opinion that you are a very intelligent person, but am unable to understand why you keep posting in the manner in which you do.
Please forgive me if you think I am being offensive because it is my wish that you should respond to folk in Answerbank so that they Do Not have to separate sugar from sand.
Hans.