This document discusses key concepts related to how meaning is constructed through codes and conventions in media works. It begins by explaining that all media uses codes and conventions to communicate, though these are often invisible to audiences who have become accustomed to them. It then discusses how codes only work when shared by a culture and how cultural knowledge provides deeper understanding beyond just word meanings. The document also distinguishes between denotation, or literal meaning, and connotation, the implied cultural associations. It notes connotations can vary between cultures. Finally, it outlines three types of audience readings: preferred, negotiated, and oppositional, noting the latter two may relate more to audience social conditions than just the text structure.