By specifying the default language of the web page like
<html lang="en"> by specifying HTML lang, the user agent and assistive technology can interpret the contents correctly.
When constructing a multilingual site, it is important to forget about this, so please be aware that even Japanese pages may be "en".
Also, when multiple languages are mixed within a single page, it is strongly recommended that consideration is also given to Success Criterion 3.1.2.
|Principle||Understandable||Information and the operation of user interface must be understandable.|
|Guideline||Readable||Make text content readable and understandable.|
|Criterion||Language of Page
|Interpretation by program can be made as to which language the default natural language of each web page is.|