This document discusses the history and techniques of film editing. It explains that early films from the late 19th century contained no editing, but that films starting in the early 1900s like "The Great Train Robbery" began experimenting with cutting between shots. As filmmakers gained an understanding of editing, they started using techniques like continuity editing, graphic matching/contrasting of shots, adjusting shot duration to control rhythm, manipulating time, and cross-cutting between storylines. Key aspects of editing covered include the 180-degree rule and shot-reverse-shot sequencing to indicate characters' points of view. Examples from films like "Dead Zone", "Kill Bill", "8 Mile", and "Pineapple Express" illustrate different editing