This document provides an overview of semiotics, the study of signs and symbols. It discusses the founders and key concepts of the field. Specifically, it notes that semiotics is the study of communication through interpretation of signs and symbols. It then discusses the founders Ferdinand de Saussure and Charles Sanders Peirce. Peirce distinguished between icons, indexes, and symbols. Icons resemble what they represent, indexes have a causal relationship but no resemblance, and symbols have no resemblance but are determined by rules governing their meaning. The document also mentions that for Saussure, there is no actual relationship between the signifier and signified.