Marks that distinguish literature from non-literature depend on the subject and cultural background, but in general, the following are some of the marks that may be used to distinguish literature from non-literature: 1. Language and expression: Literature usually uses more complex and expressive language and expressions, while non-literature may prefer simple and clear expressions. 2. Threads and plots: Literature usually involves deeper topics and plots such as love, war, social change, human destiny, etc. Non-literature may be more inclined to entertainment, news reports, etc. 3. Forms of artistic expression: Literature usually uses poetry, novels, essays, plays, and other artistic forms. Non-literature may be more inclined to non-artistic forms such as reports, news, and advertisements. 4. Reader group: Literature usually has a wider range of readers, including literary enthusiasts, professionals, readers, etc. Non-literature may be more inclined to target the general public or specific reader groups. It should be noted that these symbols are not absolute and cannot completely represent the nature of literature and non-literature. Different forms of literature had different meanings and values in different cultural backgrounds.