For AI agents: visit https://docs.here.com/data-sdk/llms.txt for an index of all pages formatted in Markdown and endpoints in OpenAPI. Append .md to any documentation page URL to get its markdown version.
A list of ISO 3166 two-letter codes for countries and regions optionally followed by up to three characters codes for subdivisions, such as 'DE', 'PL' or 'CN-HK'.
The geographic area that this layer covers.