Playboy Special Editions (formerly known as flats, then Newsstand Specials) are a spin-off series of Playboy magazine containing glamour and softcore nude photographs. The initially infrequent and later semi-regular editions ran from 1964 until the publication of the final issues in 2012. Unlike the monthly magazine, which features a variety of articles, opinion columns, and works of fiction, the only texts found in the Special Editions are captions of the photographs and readers' letters. Two issues are usually published each month. While the magazines often feature former Playmates of the Month, many other models also appear in them. Playboy Special Editions' longest-running series is Lingerie (formerly known as Book of Lingerie). The first issue was released as Book of Lingerie in 1984. Two further issues were published in 1987 and 1988; a bimonthly series began with the November 1988 issue. The title was changed to Lingerie with the September 2002 issue.