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It sits within the topics Documentation shared content templates and Lua-based templates.
Vinony links it to 34 Wikipedia language editions.
~3 min read
Encyclopedic overview
This template is part of a series that resolves the country and subdivision names to ISO 3166-1 and ISO 3166-2 codes, and vice versa. ISO 3166 defines names, two and three letter codes and code numbers for all countries and six character codes (the two letter country code followed by a dash and a two or three character subdivision code) for all top level subdivisions.
Templates
Excerpted from Wikipedia’s “Template:ISO 3166 conversion template doc” article, available under the CC BY-SA 4.0 licence.