The dot is the simplest element of visual language. Dots can be round or irregularly shaped, and are defined by characteristics like size, shape, and color. Dots can be used expressively by grouping them closely together or spreading them farther apart. Dots have various uses like shading, coloring, indicating depth, and creating textures. The optical mix occurs when colors are perceived as blended by the brain due to the distance between dots, as exploited by Pointillist artists. Exercises are suggested to create pixel art using dots on a grid.