Analysis of the continuity between the first witnesses of the French writing tradition (from the 9th C.)

Analysis of the continuity between the first witnesses of the French writing tradition (from the 9th C.), the preceding and coexisting Latin writing tradition, and the spoken language, with the help of the notion of 'style', i.e. by drawing the map of the manners in which these registers exploited the possibilities of the language system in function of expressive aims.