The term special eition (deluxe edition and collector's edition are also used) is a term generally used as a marketing incentive for various kinds of products, originally published products related to the arts, such as books, prints or recorded music and films, but now including cars and other types. A limited edition is restricted in the number of copies produced, although in fact the number may be very high. A special edition implies there is extra material of some kind included. The term is frequently used on DVD film releases, often when the so-called special edition is actually the only version released.