A sectional view is a type of drawing used in technical and engineering fields to illustrate the internal features of an object. By cutting through the object along a specific plane, these views reveal details that are not visible in standard external views. This technique helps engineers and designers understand the structure and components of complex items, such as machines or buildings. In architectural design, sectional views are crucial for visualizing how different levels of a structure interact. They provide insights into the arrangement of spaces, materials, and systems, aiding in the planning and construction process. Overall, sectional views enhance clarity and communication in design documentation.