<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>arthur2e5</author><text>One of the possible reasons Chromium is a bad for EPUB is its lack of MathML support. But then it&amp;#x27;s not like all EPUB readers have it, and it&amp;#x27;s not like MathJax can&amp;#x27;t be used for rendering.</text><parent_chain><item><author>ocdtrekkie</author><text>This is why I&amp;#x27;m super irritated Microsoft dropped EPUB support in Edge when switching to Chromium, and why it&amp;#x27;s so frustrating that EPUB support isn&amp;#x27;t common by default in operating systems: It&amp;#x27;s literally just HTML&amp;#x2F;CSS in an opinionated structure. EPUB should be as ubiquitously supported as PDF is today, no browser has an excuse for not supporting it.</text></item></parent_chain></comment><story><title>Tell HN: Today I learned Epub is just HTML/CSS</title><url>https://en.wikipedia.org/wiki/EPUB#:~:text=EPUB%20is%20an%20e%2Dbook,smartphones%2C%20tablets%2C%20and%20computers.</url></story>
<instructions>Your goal is to analyze the following comment and estimate how highly it will be upvoted by the Hacker News community.</instructions><comment><author>jrimbault</author><text>The epub reader in old-Edge was quite nice.</text><parent_chain><item><author>ocdtrekkie</author><text>This is why I&amp;#x27;m super irritated Microsoft dropped EPUB support in Edge when switching to Chromium, and why it&amp;#x27;s so frustrating that EPUB support isn&amp;#x27;t common by default in operating systems: It&amp;#x27;s literally just HTML&amp;#x2F;CSS in an opinionated structure. EPUB should be as ubiquitously supported as PDF is today, no browser has an excuse for not supporting it.</text></item></parent_chain></comment><story><title>Tell HN: Today I learned Epub is just HTML/CSS</title><url>https://en.wikipedia.org/wiki/EPUB#:~:text=EPUB%20is%20an%20e%2Dbook,smartphones%2C%20tablets%2C%20and%20computers.</url></story>