These pages are somewhat arbitrary notes, casual but with their reasonable dose of information, which express a way of putting the editor's trade into practice. There are about four dozen pieces here about people, readings, debates and practices, such as unwanted but necessary obituaries, reviews of works read and sometimes also published, comments on reading statistics, a chronicle of the long march of the single price in Mexico and an introspective examination of how useless schooling is for those who want to publish other people's books.

Without justification, then, it gathers some notes in the margin of someone who reads his profession and its current events as if they were an original that is being prepared for printing.