There are several important narrative theories and theorists that are useful to understand different types of narratives and how meaning is conveyed. Vladimir Propp and Tzvetan Todorov looked at common structural elements of narratives including equilibrium, disruption, quest, climax and resolution. Roland Barthes identified action and enigma codes that drive narratives. Allan Cameron defined modular narratives that manipulate time like anachrony, forking paths and episodic structures. Understanding these theories can help analyze and create strong narratives.