 We will not go into the formal details of the Beta system in this entry but will instead refer to Chapter 5 of Shin, where three slightly different approaches to Beta graphs—Zeman’s, Roberts’, and Shin’s—are discussed at a full length. While Zeman’s reading is comprehensive and formal, Roberts’ method seems to appeal to a more intuitive understanding of the system. Taking advantage of the merits of these two existing works, Shin developed a new reading method of Beta graphs and reformulated the transformation rules of the  system.[35]  Her approach focuses on visual features of Beta graphs and highlights fundamental differences between symbolic versus diagrammatic systems. In the remaining part of the entry, we would like to examine how the essence of the logic of relations is graphically represented in the Beta system so that the reader may place EG in the larger context of Peirce’s enterprise.