h6. [[Programmer's Reference Manuals]] h6(. » [[Service Calls|Part 16 – Service Calls]] h6((. » [[Service_International]] h6(((. » Service_International 9 h2. Service_International 9 h5. (Service &43) |_<^{width:4em}. Entry | | |<^. R1 |<^. 67 (&43)| |<^. R2 |<^. 9 | |<^. R3 |<^. [[Territory Numbers|Country number]] | |<^. R4 |<^. Pointer to buffer | |<^. R5 |<^. Length of buffer | |_<^{width:4em}. Exit | | |<^. R1 |<^. 0 to claim service, else preserved | |<^. R2 |<^. Preserved| |<^. R3 |<^. Preserved| |<^. R4 |<^. Preserved| |<^. R5 |<^. Number of characters put into buffer, or preserved if not recognised| h4. Use This service converts a country number to the unterminated 2 letter abbreviation specified in ISO3166-1. Conventionally, this is the country's top level domain name. h4. Notes The UK uses 'uk' in preference to its allocated 'gb' abbreviation. If a module provides additional countries it should check this service - if the number matches one provided by the module it should claim this service. h4. See also * [[Service Calls]] * [[Service_International]] * [[Territory Numbers]]