Hello R folks, when validating the epub version of "The R language definition" from https://cran.r-project.org/doc/manuals/r-release/R-lang.epub with epubcheck (https://github.com/w3c/epubcheck), the latter reports 490 errors. According to the Makefile in R sources, epubs are being produced using calibre. Using another converter (https://github.com/jlhg/texinfo2epub ) that transforms via Docbook XSL leads to a clean epub (according to the epubcheck). In the past I encountered quite a few invalid epubs that confuse my e-ink reader and were made by calibre. Might it be worth switching the epub converter? Best regards /me