For further details, see
HTML documents on this repository’s master branch can also be displayed in a browser via the https://w3c.github.io/pub-bg/... URL-s. For example, the docs/EPUB4_business_case.html can be read via the https://w3c.github.io/publ-bg/docs/EPUB4_business_case.html URL.
For any further help, contact Ivan Herman.