This document discusses key concepts in semiotics and how meaning is derived from signs and codes. It explains that semiotics views communication as a cultural phenomenon where meaning arises from the interaction between a text and its receiver within different cultural contexts. Codes are defined as systems of communication that use signs, rules, and shared understanding. The document also discusses how identifying codes, negotiating meaning, using syntagms and paradigms, and employing anchorage can shape the interpretation and preferred reading of communications.