The International Standards Organization or ISO is a body made up of members from a variety of standards groups from around the world. This body generally decides which worldwide standards to adopt for industrial and commercial purposes – mainly to simplify communications that transcend language barriers. One of those standards are currency codes – dubbed ISO 4217 by the ISO. The number 4217 just appears to be the number that was next in line, and no significance has been placed on it. (As a reference, ISO 4218 is a standard set for the vocabulary for printing machines.) On this ISO 4217 reference site, users will find the various currency codes used by countries all over the world – and generally accepted as the code by everyone – such as airlines or currency traders. The code is a 3 lettered symbol – the first two letters of which represent the country and the last of which represents the name of the currency – such as USD (United States Dollar) or JPY (Japanese Yen) or AMD (Armenian Dram).