The document discusses Roland Barthes' theory of narrative codes and focuses on the hermeneutic and proairetic codes. The hermeneutic code refers to unexplained parts of a story that create mysteries for audiences to solve. Common devices used with this code include snare, partial answers and equivocation to conceal the truth until the end. The proairetic code refers to actions that imply future actions/reactions and create suspense as audiences wonder how situations will be resolved. It provides three examples of films to analyze how these codes are used in opening sequences: Panic Room, Saw, and Children of Men.