Headings are titles or subtitles used in written documents to organize content and guide readers. They help break up text into manageable sections, making it easier to navigate and understand the material. Headings can vary in size and style, often indicating the importance of the information that follows. In many formats, such as articles, reports, and books, headings are typically formatted in bold or larger font sizes. They can also be numbered or labeled with letters to create a clear hierarchy. This structure aids in comprehension and allows readers to quickly locate specific information within the document.