APLN Moderator

The later code set releases mostly include 3-letter codes for more languages and specific language groups that were not covered in previous releases. You can think of each subsequent code list as an additional set to the original code list release.

Yes, you can use any of the code lists, but a reading system might not support 3-letter codes of lesser known languages. Most reading systems support major languages only, and those usually have 2-letter codes.

I’d recommend using the 639-3 site, which has a table that includes code lists 1-5 and is filterable: https://iso639-3.sil.org/code_tables/639/data/all


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