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| Preferred | Acceptable | |
|---|---|---|
| "default" language refset for language | language = <lang tag>-X-<default-lang-refset> use = preferredForLanguage (or display) | language = <lang tag>-X-<default-lang-refset> use = 900000000000013009 |Synonym (core metadata concept)| |
| Consumer lang. refset | language = <lang tag>-X-<consumer-lang-refset> use = consumer | language = <lang tag>-X-<consumer-lang-refset> use = consumer same as preferred, rather unlikely? |
| Non-consumer lang. refset | language = <lang tag>-X-<lang-refset> use = preferredForLanguage (or display) | language = <lang tag>-X-<lang-refset> use = 900000000000013009 |Synonym (core metadata concept)| |
...