In the world of media, Text is any object that can be read and then interpreted by a person/people. If you think about it, that pretty much refers to anything you see. When you see something, your brain processes the image and then interprets it. You know know what that object is and you have given it a function or value. Intertextuality is the relationship between two or more texts. Most of the time, a text may be used to make a future text more relatable between the itself and the those reading it.
Why do we refer to objects as texts then instead of message? Thats because the term message is singular in its meaning. It follows the linear model of communication which has a sender, a message, and a receiver and thats a very concrete model. With text, you read the object through your television, computer, radio, ect. and you interpret it as if you were reading a book. Thats what makes text a better term to work with as opposed to a "message"; you can bring more of you to the table this way.
