Thanks for all the explanations. I always thought it was regular HTML, but now I know to watch out for the differences.
Can you say a few more words about the library https://github.com/standardebooks/tools ?
Can it generate ePub3 from markdown files or do I have to feed it HTML already. Any repo with usage examples of the `--white-label` option would be nice.
The tooling does two main things: create a valid epub3 skeleton for your content, and build your book into “compatible”, Kobo and Kindle versions. You need to supply the valid XHTML.
Can you say a few more words about the library https://github.com/standardebooks/tools ? Can it generate ePub3 from markdown files or do I have to feed it HTML already. Any repo with usage examples of the `--white-label` option would be nice.