A Treatise on the Common Use of French Writing is an outstanding work by Louis Maigre, a 16th-century writer who became prominent in the development of the French language and writing. In the book, the author carefully analyzed the rules of French writing, offering new concepts and methods of using the language. This treatise became an important contribution to the standardization of French orthography and grammar, influencing the further development of the language. For anyone interested in the history of the French language and literature, this book will be a source of valuable information and an important document of the past.