Some visual examples of hyphenation might be helpful on these two articles: - [Why use the language attribute?](https://www.w3.org/International/questions/qa-lang-why#rendering) - [Approaches to line breaking](https://www.w3.org/International/articles/typography/linebreak.en.html#sec_hyphenation) I made a demo page here: https://xfq.github.io/i18n/lang/hyphenation.html