The mark consists of an image composed of three individual building blocks, connected at their backs as though forming the corner of a cube. Each of the three individual building blocks shows a stud protruding from the center of the block. On each protruding stud, the letters "JD" are shown outlined in the color white. The upper left brick is shown in the color red; the upper right brick is shown in the color turquoise; and the lower brick is shown in the color white. The color white is also used between the three blocks to distinguish each block from the others. The color black is used to create the effect of shadows and shading on all three blocks, and to create the effect of lines showing the structure of the blocks.