 ISO 639-5 defines language collections with alpha-3 codes in a different way than they were initially encoded in ISO 639-2 (including one code already present in ISO 639-1).Specifically, the language collections are now all defined in ISO 639-5 as inclusive, rather than some of them being defined exclusively.This means that language collections have a broader scope than before, in some cases where they could encompass languages that were already encoded separately within ISO 639-2.