LanguageCode2Language
From Sega Retro
Template for converting a two-character language code (as defined in ISO 639-1) into the name of the language. e.g.
{{LanguageCode2Language|cn}}
中文
{{LanguageCode2Language|cn|transonly=true}}
Chinese
{{LanguageCode2Language|rou}}
Roumanji†
English (en) is not translated. Roumanji is given its own special code, "rou".