The mark consists of four layers, with the first layer a blue rectangle with black border with white lettering and lines depicting a floor plan; the second layer is in the center of the rectangle and is a die-cut light blue circle with no center and with black outline divided into four sections with a gap between each section; the third layer is a capital letter "D" in black with a white outline, centered over the first two layers; the fourth layer is a capital letter "C" overlapping the bottom right quarter of the third layer letter "D" in white with a black border.