EPUB got specific structure/components, which includes metadata files, and isn't just `zip book.epub book.html book.css *.jpg`. Of course can set-up from start to have expected structure, write xhtml files as expected, write metadata files manually, and create epub with just `zip book.epub -r *` but is more convenient via script/app.
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EPUB got specific structure/components, which includes metadata files, and isn't just `zip book.epub book.html book.css *.jpg`. Of course can set-up from start to have expected structure, write xhtml files as expected, write metadata files manually, and create epub with just `zip book.epub -r *` but is more convenient via script/app.