The gestalt factors of perceptual organization listed by Murch (1973, pp 132-137) are: (a) the factor of similarity, (b) the factor of proximity, (c) the factor of common fate, (d) the factor of objective set, (e) the factor of inclusiveness, (f) the factor of good continuation, (g) the factor of closure, (h) the factor of fixation, (i) the factor of contour, and (j) the factor of interdependence. All these factors occur at one time or another when we structure images in the visual field. Their study, control, and measure is warranted.