codes. Provides ISO 639 language codes ISO 3166 territory codes
[RFC5646]. Many of the subtags defined in the Language Subtag Registry are based on code elements defined in [ISO639-1] [ISO639-2]
All 2-letter subtags are interpreted according to assignments found in ISO standard 639 "Code for the representation of names of languages" [ISO 639]
https://www.eva.mpg.de/fileadmin/content_files/linguistics/conferences/2015-diversity-linguistics/Drude_slides.pdf
In the primary language tag: - All 2-letter tags are interpreted according to ISO standard. 639 "Code for the representation of names of languages" [ISO.
9 août 2001 explicitly the operational definition of “language” being assumed making clear ... corresponding three-letter code elements in ISO 639-2.
Provides ISO 639 language codes ISO 3166 territory codes
29 déc. 2000 2-letter country code from ISO 3166-1. A number of them additionally require one of the regional extensions specified in ISO.
5 janv. 2000 1988 provides two-letter codes for 136 languages and was produced primarily to meet terminological needs. The second (ISO 639-2) appeared ...
ISO 639-3 is a comprehensive list of nearly 8000 three-letter codes for individual languages that expands on ISO 639-2. ISO 639-2 includes the same