Most decorative patterns and textures have some form of increment, meaning a repetition of pattern. If such patterns cover the sheet from border to border, and need to be butt jointed, then the alignment of increments is important. The specifier should design the project so that all repetitive design features match up at joints. Such matching requires special measuring, especially if a design pattern requires edge bending. Sometimes it is easier to specify a pattern with a large border in a plain finish such as mirror polish or satin non directional. This is done to avoid matching problems.