I18N-ACTION-823: Add text to specdev in the language tags section explaining well-formed, validity, etc.

I18N-ACTION-823: Add text to specdev in the language tags section explaining well-formed, validity, etc.

https://www.w3.org/International/track/actions/823

Assigned to: Addison Phillips

Received on Thursday, 5 September 2019 14:30:25 UTC