This document defines and describes various documentary film techniques. It begins by explaining that a documentary aims to document and inform about real events or topics. It then discusses different styles including drama documentaries which recreate events, fly-on-the-wall which observes without interference, docusoaps which follow people over time with some scripting, fully narrated which uses voiceover to explain visuals, and mixed/self-reflexive styles which incorporate different elements like interviews and narration. The document also covers documentary techniques like interviews, dramatization, and mise-en-scene which frames shots effectively to guide the audience.