Display options for single-channel video works range from free-standing video monitors and wall-mounted plasma screens to small projections on a gallery wall or large-scale projection on a screen in a theater. The choice of display device depends on a range of variables, including the presentation environment and the artist's work. Early single-channel video works, such as Joan Jonas's Vertical Roll (1972), may be best suited for exhibition on a monitor, while a new, digitally-produced work, such as Pierre Huyghe's A Journey That Wasn't (2006), may be better served by a plasma screen or a projection. The following is an outline of common display equipment for single-channel video or media works.