Pattern Feature
A pattern consists of multiple instances of a feature. Select a pattern type and define dimensions, placement points, or a fill area and shape to place the pattern members. The result of the operation is a feature pattern. When you pattern this feature pattern, the result is a feature pattern pattern. You cannot pattern either a group pattern or a feature pattern pattern.
For most pattern types, the feature or feature pattern selected for patterning is the pattern leader. After you pattern the selected feature or feature pattern, the pattern leader that you selected is the pattern header while the instances are pattern members. To copy, mirror, and move patterns, you must select the pattern header instead of the pattern members.
