Ink vehicles having improved gellant solubility and ink compositions including such ink vehicles are provided. The apparatus is described a mold having a first section adjacent a base and a second section movably attached to the first section and adjacent the base in which cement may be placed. The FPGA is tested to determine whether it can execute the design accurately even with the localized defect. , the interior or the exterior wall, the floor or the ceiling, includes surface layers with sandwiched insulation material, and rib-shaped spacers between the two surface layers.