The main text of this book is followed by a section of 100 examples of pattern poems, each printed one to a page, that were written in Portugal between the 17th and 18th century. -- Source of annotation: Marvin or Ruth Sackner.

A table of chronology of Portuguese concrete poetry included in this book indicates that it began in 1962 with publication of de Melo e Castro's book, "Ideogramas." The book reprints texts and correspondence from the early days of concrete poetry in Portugal. -- Source of annotation: Marvin or Ruth Sackner.