Film editing is discussed from the point of view, not only of the person in the cutting room, but also of the person who has responsibility for the final film. Part I outlines the history of editing from the silent film to 1953. It discusses the practice of editing for action, dialogue, comedy, and montage sequences, as well as in documentaries, newsreels, and educational films. The principles of editing, including timing, pace and rhythm, continuity, and sound editing are also explained. Part II examines the innovations in editing over the last two decades which are the result of the use of wide screens and of the development of "cinema verite" and "new wave" films. Sections of shooting scripts and film clips illustrate the procedures discussed. (JK)