This is the first way we move through a story: one-way motion, word after word until the end. Narratologists call it movement on the discourse or textual level. (Discourse comes from discurro, to run back and forth: think of your eyes reading lines on this page.) Other movement takes place inside the content of the story: what happens, whether things happen chronologically or are tangled and must be unraveled, whether you move less through events than through ideas, and so on.
