One seminal text in this field cites the previous work of CS Peirce, who developed a (*) triadic theory of this field, and discusses several different properties of codes.
One article titled after this field divides interacting objects into dynamic, immediate, and final. Another text in it talks about an engineer creating the "Watergate Model". In one tool in this field, solid lines indicate contradiction and dotted lines indicate contrary relationships; that is this field's namesake "square". Martin Davidson's loft is discussed in a Joan Kron article describing its application to home décor. One seminal text in this field cites the previous work of CS Peirce, who developed a (*) triadic theory of this field, and discusses several different properties of codes. Charles Morris divided it into syntactics, semantics, and pragmatics, and one theorist of this field applied it in a work of fiction about the detective William of Baskerville, entitled The Name of the Rose. For 10 points, name this field pioneered by Umberto Eco, which studies signs.
One article titled after this field divides interacting objects into dynamic, immediate, and final.
semiotics [accept things like "the study of signs" before mention]