Excellent thread......
I need to think about all this for a while - but to all - especially Gerben - my thanks.....
I'm sure I'll have many questions - and for that - might set up a copy of this thread in a new Forum, so we can discuss it without detracting from Bob's original post - but this is a subject which I'm very interested in, as are many of you....
My thanks again!
John D.
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