The mark consists of five solid squares including a largest square at lower-left of the design, a first medium-size square to the right of the largest square, a second medium-size square above the upper-right corner of the largest square, a second-smallest square to the right of the lower-right corner of the second medium-size square and above the upper-left corner of the first medium-size square, and a smallest square that is above and to the right of the upper-right corner of the first medium-size square, with a right-angle line spaced outward from each of the largest square's four corners to form a dashed outline of a square around the largest square.