The spirit of this volume is well identifiable defining the target audience: "to all who want to reflect on the language, its doing and its operation, from the observation of its use." In more than 1,300 pages, this book does not only talks about grammar rules, but also shows mainly words in their everyday use. The work is structured in three parts: the first one has chapters with general indications on conceptual questions of grammar; in the second part, chapters refer to various classes/subclasses of words and their operation; the third part is a consultation section usually assembled in table format.