ISO 4217 "ruble". In addition to codes for most active national currencies ISO 4217 provides codes for "supranational" currencies, procedural purposes, and several things which are "similar to" currencies: The use of an initial letter "X" for these purposes is facilitated by the ISO 3166 rule that no official country code beginning with X will ever be assigned. Because of this rule ISO 4217 can use X codes without risk of clashing with a future country code. ISO 3166 country codes beginning with "X" are used for private custom use (reserved), never for official codes. For instance, the ISO 3166-based NATO country
International Committee for Information Technology Standards that will be implemented in many nations. As such, INCITS' executive board also serves as ANSI's Technical Advisory Group for ISO/IEC Joint Technical Committee 1. JTC 1 is responsible for International standardization in the field of information technology. INCITS operates through consensus. Many times, the U.S. standard that INCITS members develop then will become the baseline standard for the international community. INCITS is guided by its executive board. The INCITS executive board established more than 50 Technical Committees, Task Groups and Study Groups that are constantly developing standards for new technologies and updating standards for older products. More than 750