Although black and white, this image was created in Color Expansions. Color Expansions contains some cellular automata functions. Some of these functions may be set to iterate automatically within a selection area. The selection area may be moved while the iteration is in progress. In this case, a Thicken-Hollow iteration, invented by the author, was initiated against a black and white image created by a previously grown pattern. Occasionally as the iteration proceeded, the selection rectangle was jump-moved to an adjacent area or slowly moved in one direction (an example of slow moving consequences are the small white triangles located towards the lower right). The longer diagonal white lines were originally of a third color, and thus were not effected by the iteration, although they did affect their immediate surroundings.