The present invention provides compositions and methods for decreasing photosensitivity induced by photodynamic therapy. The belly section comprises a top surface, a bottom surface, and two side surfaces. Advantages may include superior properties and reliability as compared to conventional cementing operations often involving Portland cement. The aft deck may include an upwardly rotatable pitch control surface at the trailing edge of the deck. The soft SMI exits with a return code or other indication to signify that a new SMI should be invoked to continue processing.