To help you add visual interest to your artwork, Adobe Illustrator provides calligraphic, scatter, art, pattern, and bristle brushes. In addition, you can use the Live Paint feature and Shape Builder tools, to paint different path segments and fill enclosed paths with different colors, patterns, or gradients. Using the Shape Builder tool, you can create new complex new shapes by merging simple shapes. Using opacity, masks, gradients, blends, meshes, and patterns provides limitless opportunities for creativity. The Width tool provides the ability to create strokes with variable width that make very articulate outlines.