This thread now contains a vast wealth of information - some of which I probably knew once but have forgotten, some of which is new information for me. Without a doubt, I am now significantly more experienced and more educated in this area (but still have loads more to learn too!)
One thing which is very good to see (at least, from a personal point of view it's good; from a professional point of view it's quite disappointing) is that I'm certainly not the only person on this forum whose understanding of this particular aspect of met isn't as thorough as it could be!
FFF
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