$FreeBSD: head/share/mklocale/README.locale_name 78020 2001-06-10 22:13:29Z ache $

Locale name string format must be compliant with XPG3 and
using following format.
	<locale name>   ::= <language>_<territory>.<encoding>
	<language>      ::= based on ISO 639
	<territory>     ::= based on ISO 3166 (country code)
	<encoding>      ::= X11 codeset preferred