The document discusses different models of narrative structure that can be applied to media texts, including Propp's 31 narrative functions model, Todorov's 5-stage model of narrative, and Roland Barthes' 5 codes of narrative. Propp believed narratives follow a sequence of 31 possible functions or plot points, such as one family member leaving home or a villain deceiving the victim. Todorov saw narratives as moving from an initial equilibrium, through disruption, an attempt to rectify it, to a new equilibrium. Barthes identified codes like hermeneutic (mystery), proairetic (action), and semantic (meaning).