MediaWiki:Apihelp-query+languageinfo-paramvalue-prop-fallbacks
The language codes of the fallback languages configured for this language. The implicit final fallback to 'en' is not included (but some languages may fall back to 'en' explicitly).
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The language codes of the fallback languages configured for this language. The implicit final fallback to 'en' is not included (but some languages may fall back to 'en' explicitly).