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(NB: I would have added this as a comment to @fgysin's answer, but I don't have enough rep. to comment yet.) @fgysin's answer (and the associated comments) is very thorough, and covers most points...
Answer
(NB: I would have added this as a comment to @fgysin's answer, but I don't have enough rep. to comment yet.) @fgysin's answer (and the associated comments) is very thorough, and covers most points...