{c}
{wiki}

This is a good thing. It basically contains an entire <website>, with <HTML> and assets inside a single <ZIP>, and a little bit of metadata.

It is incomprehensible why <browsers> don't just implement it as they already have all the web part, and also <ZIP> stuff:
* https://www.quora.com/What-is-the-reason-that-browsers-cannot-open-epub-files-without-extensions on <Quora>

The situation is so sad. <Ubuntu> 21.04 doesn't come with a reader installed by default:
* https://askubuntu.com/questions/14378/what-software-can-i-use-to-view-epub-documents


 EPUB