Two basic kinds of gestalt logic govern composition in every layout: symmetry and asymmetry. Symmetry is a compositional state in which the arrangement of forms responds to the central axis of the format (either the vertical or the horizontal axis); forms also may be oriented relative to their individual central axes. Symmetrical arrangements create a “mirroring” effect—spaces or contours on either side of the orga-nizational axis are the same. Asymmetry is an opposing logic: The arrangement of every form defies relationship with any central axis or among the forms themselves. The result is a collection of spatial proportions that are inherently different from each other.