Thanks! The DTD is described in the talk/paper I gave at XML Prague 2017 linked from [1]. Meanwhile, I've got a revised version for HTML 5.2 with basic coverage

Thanks! The DTD is described in the talk/paper I gave at XML Prague 2017 linked from [1]. Meanwhile, I've got a revised version for HTML 5.2 with basic coverage of the validator.nu test suite, though not published on the site yet. [1]: http://sgmljs.net/blog/blog1701.html http://sgmljs.net/blog/blog1701.html