Used in BCP47 recommendation, to indicate which subtags are valid for a certain variant
prefix
The date on which an entity was deprecated.
deprecation date
Variant Taxonomy
ALA-LC Romanization, 1997 edition
Used in BCP47 recommendation for the subtag of a language, script, region or variant
IANA subtag
Named individual
Preferred tag is ja-Latn-alalc97
Hepburn romanization, Library of Congress method
Variant