This document discusses different types of narrative structures that can be used in documentaries. It describes closed narratives which have a clear beginning, middle, and end with no loose ends. Open narratives end without a clear conclusion, leaving questions unanswered. Linear narratives show events in chronological order, while non-linear narratives have no set timeline. Single strand narratives focus on one character or plot, whereas multi-strand narratives show multiple perspectives. It also discusses theorists like Todorov, Propp, Levi-Strauss, and Barthes and the narrative patterns and codes they identified.