This document discusses the different modes or categories of documentary films. It begins by explaining that modes are used to classify documentaries based on how they present the truth and interact with their subjects. Five main modes are identified: interactive, expository, observational, reflexive, and performative. Examples are given of famous documentary filmmakers like Michael Moore and David Attenborough, comparing how their styles differ. Each mode is then defined in more detail, explaining its key features and examples. The document concludes by assigning students a task to research and define one of the modes in more depth.