A
flashback is an interjected
scene that takes the narrative back in time from the current point in the
story. Flashbacks are often used to recount events that happened before the story's primary sequence of events to fill in crucial
backstory. In the opposite direction, a
flashforward (or prolepsis) reveals events that will occur in the future. Both flashback and flashforward are used to cohere a story, develop a character, or add structure to the narrative. In literature,
internal analepsis is a flashback to an earlier point in the narrative;
external analepsis is a flashback to a time before the narrative started.