ISO 4217 added to the standard. A number of currencies are not included in ISO 4217, because these currencies are: (a) minor currencies pegged 1:1 to a larger currency, even if independently regulated (b) a legal tender only issued as commemorative banknotes or coinage, or (c) a currency of an unrecognized or partially recognized state. These currencies include: See for a list of all currently pegged currencies. Despite having no official recognition in ISO 4217, the following non-ISO codes are sometimes used locally or commercially. In addition, GBX is sometimes used (for example on the London Stock Exchange) to denote Penny sterling,
ISO/TC 37 are closely linked to the standardization efforts of IEC (International Electrotechnical Commission, founded in 1906) and ISO (International Organization for Standardization, founded in 1946). A terminology standard according to ISO/IEC Guide 2 (1996) is defined as "standard that is concerned with terms, usually accompanied by their definitions, and sometimes by explanatory notes, illustrations, examples, etc." ISO 1087-1:2000 defines terminology as ""set of designations belonging to one special language" and designations as "representation of a concept by a sign which denotes it"." Here, concept representation goes beyond terms (being only linguistic signs), which is also supported by the state-of-the-art of terminology