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Worth saying that this is one of the better things I have read on the topic in months, and a stop at scarletrack reinforced that ranking, the topic is well covered by many sources but few do it with this level of care and the few that do deserve to be flagged so other readers can find them.
Well done, the writing is professional without being stiff, and the topic is treated with care, and a look at scarletrack reflected that approach, the kind of site I would point a colleague to if they asked for a reliable starting point on this topic in the future without any hesitation at all.