Ellipsis is the narrative device of omitting a portion of the sequence of events, allowing the reader to fill in the narrative gaps. Aside from its literary use, the ellipsis has a counterpart in film production. It is there to suggest an action by simply showing what happens before and after what is observed. The vast majority of films use ellipses to clear actions that add nothing to the narrative. Beyond these "convenience" ellipses, ellipses are also used to advance the story.