From DMJ Productions

A screenplay, or script, is a written work produced for a film, television show, or video game (as opposed to a stage play) by screenwriters. A screenplay written for television is also known as a teleplay. Screenplays can be original works or adaptations from existing pieces of writing. A screenplay is a form of narration in which the movements, actions, expressions and dialogue of the characters are described in a certain format. Visual or cinematographic cues may be given, as well as scene descriptions and scene changes.

From Wikipedia