The mark consists of a hexagonal background positioned such that each lateral side is vertical and such that one point is upwards and the opposite point is downwards. In front of the background are a plurality of geometric shapes. The uppermost shape comprises an angled "U" shape with its right leg starting at the uppermost point of the hexagonal background and extending down approximately 1/4 of the background, its base extending left and down at a roughly 30 degree angle approximately 2/3 of the background, and its left leg extending back up to the edge of the background. The lowermost shape comprises an inverted angled "U" shape with its left leg starting at the lowermost point of the hexagonal background and extending up approximately 1/4 of the background, its base extending right and up at a roughly 30 degree angle approximately 2/3 of the background, and its right leg extending back down to the edge of the background. The central shape starts at the upper right of the background and extends down, opposite the uppermost shape, then angles left and down parallel to the bases of both "U" shapes, and finally extends down to the edge of the background, opposite the lowermost shape.