EPUB WCAG compliance "Every HTML document needs a lang attribute" #2661
Description
Created an epub file using latexmlc and ran it through Ace by Daisy who indicate this violation of WCAG:
Serious: WCAG 2.0 A
html-has-lang
[Learn about: Language](https://github.com/brucemiller/LaTeXML/issues/new#)
The <html> element does not have a lang attribute
Ensure every HTML document has a lang attribute
<html> element must have a lang attribute
I looked at the epub file and the lang is there in the content.opf file but is not included in the xhtml files.
Somebody with more expertise than I have would need to say if this is actually required by WCAG, or if the Ace by Daisy is reporting a violation that is not really there.