The document discusses six modes of documentary film identified by Bill Nichols: expository, poetic, observational, participatory, performative, and reflexive. It provides examples for each mode. The expository mode uses a voiceover to directly address the viewer. Poetic documentaries are subjective and focus on imagery over narrative. Observational documentaries act as impartial spectators. Participatory documentaries involve the filmmaker interacting with subjects. Performative documentaries acknowledge their constructed nature. Reflexive documentaries emphasize subjectivity and emotional impact.