... film is exposed, or used up, in taking the scenes intended for a five-part (5,000-foot) "feature." In every case, a certain amount of film in excess of what is actually needed is inevitably exposed in the photographing of the complete picture. In the "cutting room" of the studio the director "assembles" his picture—pieces together the different scenes, sub-titles, and inserts, and "cuts" portions varying from a few inches to many feet in length when ... — Writing the Photoplay • J. Berg Esenwein and Arthur Leeds