Reported by: Nat McCully

When I wrote the mojikumi engine in InDesign, and we did some research into what Korean required, we found several things:
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3) Line leading in practice follows Roman convention of measuring upwards from a baseline. However, given the em-body nature of Hangul, intuitively I think the spec could be right (and leading is measured downwards from the em-bottom). I would like to see some mention of current practice in word-processors and other software and how they differ from a preferred standard (or are the same and the leading model mentioned in the spec is actually wrong).