Stories have been shared throughout history using oral, visual, written, and performed means, and modern film incorporates all of these. A good editor understands how to tell a story through the effective use of editing tools, film grammar, timing, and established rules of editing. A film's vision is a collaborative effort of its writer, producer, director, cinematographer, and editor. The document then discusses various camera shots and movements, lens techniques, continuity editing rules, complex editing methods like montage, and structural approaches to editing narratives.