# For HTML language tagging # (the LANG attribute), we explicitly overruled this (see RFC2070). # For HTTP, using a similar overruling would make sense. This would # mean that a server would check for "en-us", and if not found, for "en". Please review section 14.4 of RFC 2068 (HTTP/1.1). I still haven't quite understood if anyone thinks this section is wrong or should be changed.