What is the main purpose of using outline solids in graphic communication?

The main purpose of using outline solids in graphic communication is to provide clear boundaries of shapes. This technique is fundamental as it allows viewers to easily identify and understand different components of a design. Outlines help define the edges and forms of objects, making it easier to distinguish one shape from another, which is especially important in technical drawings or illustrations that require precision. By using outline solids, artists and designers ensure that their visual messages are communicated clearly and effectively, facilitating understanding for the audience. This clarity is vital in various applications, including diagrams, maps, and instructional materials, where misinterpretation of shapes can lead to confusion.