ISO 4217 or banking. At the 17th session (February 1978), the related UN/ECE Group of Experts agreed that the three-letter alphabetic codes for International Standard ISO 4217, "Codes for the representation of currencies and funds", would be suitable for use in international trade. Over time, new currencies are created and old currencies are discontinued. Frequently, these changes are due to the formation of new governments, treaties between countries standardizing on a shared currency, or revaluation of an existing currency due to excessive inflation. As a result, the list of codes must be updated from time to time. The ISO 4217 maintenance agency
ISO/IEC JTC 1/SC 35 ISO/IEC JTC 1/SC 35 ISO/IEC JTC 1/SC 35 User interfaces is a standardization subcommittee (SC), which is part of the joint technical committee, ISO/IEC JTC 1, of the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC), that develops standards within the field of user-system interfaces in information and communication technology (ICT) environments. The subcommittee was founded at the 1998 Sendai ISO/IEC JTC 1 Plenary meeting, before which it was a working group directly under ISO/IEC JTC 1 (ISO/IEC JTC 1/WG 5). The international secretariat of ISO/IEC JTC 1/SC 35 is AFNOR (Association Française de Normalisation), located in