Intertextuality is the shaping of a text's meaning by another text. It is the interconnection between similar or related works of literature that reflect and influence an audience's interpretation of the text. The three types of intertextuality are obligatory, optional, and accidental. Obligatory intertextuality is when the writer deliberately invokes a comparison or association between two (or more) texts. Optional intertextuality means it is possible to find a connection to multiple texts of a single phrase, or no connection at all. Accidental intertextuality is when readers often connect a text with another text, cultural practice or a personal experience, without there being any tangible anchorpoint within the original text. The first comparison of the scene in Jurassic Park and Toy Story is an example of obligatory intertextuality. In Jurassic Park the t-rex is spotted in the side mirrors of the car and is seen getting closer and closer to the vehicle. In Toy Story, a very similar scene is shown when Rex is chasing after the car, and Mr. Potato Head spots him in the side mirror and sees that he is chasing after them. The Simpson's reference is another example of obligatory intertextuality. The writer purposely makes the Homer version of art to be almost exactly like the original piece from Scream. The association between the two texts was deliberate and was meant for people to notice and understand. The last comparison of the scene from Moana and Lilo and Stitch is an example of accidental intertextuality. The original scene from Lilo and Stich shows Stitch providing shade for the momma turtle and baby turtle. A similar scene in Moana shows her leading a baby turtle safely to the water without it getting attacked by birds. Both characters in each movie use very similar looking leaves and use that leaf to help out turtles. Some viewers may have noticed this and connected one scene to another.