[Hypergraphic Novel] ISOU Isidore, "Initiation à la haute volupte", Paris. Escaliers de Lausanne [1960]. First edition. Isidore Isou’s poetry defined what we know today as Lettrism. The current work is a typical example of his Hypergraphic Novels, novels that are no longer restricted to using words and sentences, but integrate all the customary signs of communication. Artistic binding by Jean De Gonet.