Thanks to you both (Quoth and Howell) for reply and explanation. I am, in fact, uploading to KDP's 'Book Preview' then 'Launch Previewer'. Doing so is tedious, so I downloaded their self-sufficient app, but am hampered that I use Linux. I did download it and used it in Windows to evaluate epubs in progress. Bit by bit I chip away at it. Now I'm stuck on a few things here and there: 3em dash shows up as little square, meaning (I suppose) that it won't take unicode or something. Thanks again, Pop
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