In mid-2016 TRA Treviso Ricerca Arte hosted an exhibition by Francesco Arena called Perimetro con quattro opere in uno spazio. We designed a book, not as an exhibition catalog, but rather as an artwork part of the exhibition. We followed some of the artist’s own conceptual methods: the texts in this book are the verbalization of the artist’s works and artworks procedures; the total surface of all the pages in the book are calculated to occupy the same amount of space of the exhibition area.