I have now added a ‘How to’ article covering the key points on what is a subject where a very wide discussion is possible! I make a cross reference to one other useful resource for those who want to dig further, but as usual, I have tried to deal with the issue in such a way that you will get a general idea of the main considerations, but will not be instantly bamboozled!
As ever feedback is welcome. Subscribers can request more specific research, of course.
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