The opening of the grammar provides an overview of the book's purpose and structure, detailing how it is divided into two main parts: the first concerning words and their properties, and the second examining how these words combine to form sentences. It introduces fundamental grammatical concepts, such as parts of speech (nouns, verbs, conjunctions, etc.), as well as specific topics like the sounds of letters, their pronunciation, and the classification of vowels and consonants. The preface explains the author's meticulous approach to collecting detailed examples from classical authors and emphasizes the collaborative effort involved in revising and completing the grammar after the author's death. (This is an automatically generated summary.)