Editing Module:ISO 3166/doc (section)

===Subdivisions (ISO 3166-2)===
Inputs to <code>name</code> must be valid [[ISO 3166-2]] codes, i.e. the country's alpha-2 code for the first part, and up to three alphanumeric characters for the second part. They may be given normally (with a hyphen between the parts), or split between two unnamed parameters. For <code>code</code>, the first parameter is the country name (or any of its three codes, like above), and the second the subdivision name.
====Code (alpha-2)====
To get the alpha-2 code of a subdivision use the code function with parameter 1 being the country and parameter 2 being the subdivision
*{{tnull|&#35;invoke:ISO 3166|code|United Kingdom|England}} &rarr; {{#invoke:ISO 3166|code|United Kingdom|England}}
*{{tnull|&#35;invoke:ISO 3166|code|GBR|England}} &rarr; {{#invoke:ISO 3166|code|GBR|England}}
*{{tnull|&#35;invoke:ISO 3166|code|GB|England}} &rarr; {{#invoke:ISO 3166|code|GB|England}}
====Name====
To get the name of a subdivision use the name function with parameter 1 being the country and parameter 2 being the subdivsion '''or''' parameter 1 being the subdivsion code
*{{tnull|&#35;invoke:ISO 3166|name|GB-ENG}} &rarr; {{#invoke:ISO 3166|name|GB-ENG}}
*{{tnull|&#35;invoke:ISO 3166|name|GB|ENG}} &rarr; {{#invoke:ISO 3166|name|GB|ENG}}

{{para|isoname}} works for subnational entities as well; keep in mind that ISO 3166-2 uses (transliterations of) local names that may differ from English ones. Set {{para|lang}} to a [[ISO 639|language code]] to switch between different languages for entities that have multiple ISO names. The default language for multilingual entities can be set on the country's [[Module:ISO 3166/data|data page]].
*{{tnull|&#35;invoke:ISO 3166|name|BE|BRU}} &rarr; {{#invoke:ISO 3166|name|BE|BRU}}
*{{tnull|&#35;invoke:ISO 3166|name|BE|BRU|isoname{{=}}yes}} &rarr; {{#invoke:ISO 3166|name|BE|BRU|isoname=yes}}
*{{tnull|&#35;invoke:ISO 3166|name|BE|BRU|lang{{=}}fr}} &rarr; {{#invoke:ISO 3166|name|BE|BRU|lang=fr}}
*{{tnull|&#35;invoke:ISO 3166|name|BE|BRU|lang{{=}}nl}} &rarr; {{#invoke:ISO 3166|name|BE|BRU|lang=nl}}