High Quality Content by WIKIPEDIA articles! Creation of an image to communicate an idea presupposes the use of a visual language. Just as people can 'verbalize' their thinking, they can 'visualize' it. The elements in an image represent concepts in a spatial context, rather than the linear form used for words. Speech and visual communication are parallel and usually interdependent means by which humans exchange information. A diagram, a map, and a painting are all examples of uses of visual language. Its structural units include line, shape, color, motion, texture, pattern, direction, orientation, scale, angle, space and proportion.