The document discusses the concept of intertextuality, which refers to relationships between texts, especially literary works. It provides examples of how horror films include hidden references or parodies of other films through character names, scenes, or other clues that horror fans can recognize. Specifically, it mentions how the Scary Movie franchise parodies many horror films through recognizable scenes. It also discusses links between the films Halloween, Psycho, and Scream through the character name "Loomis," and a link between Scream and A Nightmare on Elm Street through a character named "Fred." The document concludes by considering character names from popular horror films that could be used intertextually in a horror trailer.