The terms special edition, limited edition, and variants such as deluxe edition or collector's edition, are used as a marketing incentive for various kinds of products, originally published products related to the arts, such as books, prints, video games or recorded music and films, but now including cars, fine wine, and whisky, among other products. A limited edition is restricted in the number of copies produced, although in fact the number may be very low or very high. The term is frequently used on DVD film releases, often when the so-called special edition is actually the only version released.