well, learning this stuff 1st hand could be a very slow experience, I'd really have to read each book twice - before & after forced conversion - to see what differences if any were occuring. I was hoping that someone who understood the conversion code could enlighten me as to what it actually does. I'm mostly interested in what goes on within just 4 permutations: from epub/mobi to epub/mobi- so e to e, e to m, m to e, m to m
e.g.for all I know tha preprocess & header/footer options may not even be applicable to certain types of conversions, and it may be that , for example , going epub to rtf to epub causes no degredation but how would I know, except for having a photographic memory & reading the book twice ???
I do understand the concept of font rescaling, but "preprocess" is a vague option which is OFF by default.
I am keeping backups of all sources, until I understand calibre options better.
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