about defining or using graphical patterns, which can be used to fill a path. PDF and PostScript know tiling and shading patterns. Patterns are supported by [tag:tikz-pgf] and [tag:pstricks].
Patterns are graphical elements, which can be used to fill a path. Both PostScript and PDF know two kind of patterns:
Tiling patterns: A tile, a small graphical drawing, is repeated horizontally and vertically.
Shading patterns: An area is filled with colors, which change smoothly according to a gradient.