A plus having a set font size or two like the eBookwise is that it can produce texts without widows or orphans, and my conversion CSS file does that. I'm of the ragged-right school, since adding soft hyphens to allow smooth justification is too much work for my personal conversions. I do have Tidy make straight quotemarks and apostrophes curly. I've never before read of any "no one-letter words at the end of lines" rule, and three random paperbacks I just looked at don't seem to have, either. But the hard-space method could let me cater to it if desired, just as more extensive work to soft-hyphenate long words could let me get smooth justification even at the large font size I use. So in theory an eBookwise could follow every rule cited.
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