In this book the author tries to guide us on usage of punctuation, as these are not instruments of writing regulated and strictly normalized by any institution or academy. It is writers, literates and non-literates, who with their past and present use allow us to extract some frequency of use.

Apart from telling us how and when to use punctuation marks as the comma, the full stop, the dash, the apostrophe, ... it also includes appendices on abbreviations, quotations and notes, bibliographic indexes, epigraphic signs, along with a table of contents and a consulted bibliography.