An outline is a structured plan that organizes ideas and information in a hierarchical format. It typically consists of headings and subheadings that represent the main topics and supporting details. Outlines are commonly used in writing, research, and presentations to help clarify thoughts and ensure a logical flow of information. Creating an outline can enhance the writing process by providing a clear roadmap for the content. It allows writers to identify key points and arrange them in a coherent order, making it easier to develop a comprehensive piece. Outlines can be used for various formats, including essays, reports, and speeches.