The codes are current as of the publication of ISO 639-2: 1998. ISO 639-1 codes contain those published in ISO 639: 1988 with additions from ISO 639/RA Newsletter No. 1/1989 and from a decision of the Advisory Committee of ISO/TC 37 on 1997-08-27 in Copenhagen.
				WARNING: this implementation in the database is ONLY a way to have the language code without normative descriptions. THIS IS NOT A DATA CATEGORY.