The document discusses the author's purpose for writing a story. It states that there are three main reasons for authors to write: to persuade, to inform, or to entertain. The author uses the acronym "PIE" to help readers remember these purposes - P for persuade, I for inform, and E for entertain. The document provides examples of texts and asks readers to identify the purpose for each, whether to persuade, inform, or entertain. It aims to help readers understand an author's intent and why they wrote a particular text.