ISO 4217 codes (STANAG 1059, 9th edition) use "X" codes for imaginary exercise countries ranging from XXB for "Brownland" to XXR for "Redland", as well as for major commands such as XXE for SHAPE or XXS for SACLANT. Consequently, ISO 4217 can use "X" codes for non-country-specific currencies without risk of clashing with future country codes. The inclusion of EU (denoting the European Union) in the ISO 3166-1 reserved codes list, allows the euro to be coded as EUR rather than assigned a code beginning with X, even though it is a supranational currency. The ISO 4217 standard includes a crude mechanism
ISO/IEC JTC 1/SC 17 cards and personal identification, some of which are freely available. The types of standards developed by the subcommittee, by working group, include: For a complete set of standards published by ISO/IEC JTC 1/SC 17 and detailed descriptions, see the document “Summary of Standards.” ISO/IEC JTC 1/SC 17 ISO/IEC JTC 1/SC 17 Cards and personal identification is a standardization subcommittee of the Joint Technical Committee ISO/IEC JTC 1 of the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC), which develops and facilitates standards within the field of identification cards and personal identification. The international secretariat of ISO/IEC JTC