0. The text grammars set up so far generalize the formal properties of specific types of sentence grammar.¹ This procedure, widely accepted among text linguists, led us to the assumption that text grammars developed from a specific type of sentence grammar will have the formal and empirical properties of this model sentence grammar. This assumption will be dealt with in this paper.² Another feature of the text grammars set up so far is closely connected with the theoretical and practical aims such text grammars try to meet: We think that not only the sentence grammar chosen as a model for the construction of a text grammar and the practical interests which led to its construction determine its theoretical power but also its supposed domain of application.