In an apparatus and process for manufacturing a detergent bar, the bar comprises a first distinct zone comprising a first component and at least a second distinct zone comprising a second component. An array of separately actuated bodies is disposed proximal to the exposed surface, and an actuator separately actuates at least some of the bodies to change a spectral characteristic of a wave propagating through the waveguide. A stepped and segmented surface of at least one microlens enables that microlens to provide a plurality of diffraction patterns. The detection cells generate a plurality of detection signals, and the detection signals represent specific color information. A reference image is formed from one or more of the CCD base images images, and an incoherent change detection image formed by comparison between a given CCD base image and the reference image. Additionally, buildings can have an optional fixed or portable cantilever system that also aids in the movement of the cabin.