This is used to express the edition number or string of a resource. :related-item prism:edition "3" . An issue of a magazine may be produced in multiple editions, with each edition providing content customized for a particular demographic or geographic group. Fortune, for example, is produced in a Domestic edition, a European edition, and an Asian edition. While much of the content overlaps, there is some content that is unique to each edition. An identifier for one of several alternate issues of a magazine or other resource. has edition