For film-makers everywhere it can be a formal lifeline that represents the difference between abject failure and narrative coherence.

Such a text, though external to the picture, provided it with narrative coherence and aesthetic unity.

This destroys narrative coherence and, for much of the time, makes reading a chore.

Narrative coherence asks if a story hangs together.

Grandson wrote several sets of short love lyrics, using the series form for narrative coherence and thematic construction, as well as to examine different aspects of a single narrative.