The Marginal Nun in the Masora of the Cairo Codex of the Prophets: Use and Function

The sign like a large final nun that appears in the margins of some early manuscripts has been considered another way of expressing the ketib-qere phenomenon. The analysis and study of the more than five hundred occurrences located in the Cairo Codex of the Prophets question this explanation and make it possible to define its use and explain its function in the context of this codex. According to this analysis, the marginal nun is related to the consonantal text without any reference to the reading tradition; its function is to warn that something happens in the consonantal text but not to explain it; and finally, its use in the Cairo Codex is determined by the probability that the spelling of word might lead to a serious error in understanding.