What is the key function of a section view in technical drawings?

The key function of a section view in technical drawings is to reveal internal structures. Section views are used to illustrate the hidden internal components of an object, allowing designers, engineers, and manufacturers to understand how different parts fit together and function internally. By slicing through the object and providing a view of the interior, section views make it possible to visualize features that are not visible from the exterior, such as internal cavities, supports, and complex assemblies. This capability is crucial for ensuring proper functionality and manufacturability of designs, as it aids in both analysis and communication among stakeholders involved in a project.