This document discusses different types of narrative structures used in documentaries. It describes closed narratives as having a clear conclusion that answers all questions. Open narratives leave judgments and conclusions open for the audience to determine. Linear narratives follow a timeline of causes and effects, while non-linear narratives present information out of chronological order. Single-strand narratives focus on one narrative throughout, and multi-strand narratives cut between multiple concurrent stories. Circular narratives start and end in the same place by posing and then answering a hypothesis.