The mark consists of a set of six quadrilaterals, conjoined into three separate irregular concave hexagons, with the upper and lower quadrilateral of each hexagon differentially shaded across a central horizontal axis; the leftmost hexagon comprised of two conjoined parallelograms, each differentially shaded and each extending rightwards, forming an arrow shape with its point to the left, and with the narrowest width of the three hexagons; the center hexagon comprised of two conjoined parallelograms, each differentially shaded and each extending rightwards, forming an arrow shape with its point to the left and also with the same angle as the leftmost hexagon, and with the thickest width and the darkest shading of the three hexagons; and the rightmost hexagon comprised of two conjoined trapezoids, each differentially shaded and each extending leftwards, forming an arrow shape with its point to the right with the same angle as the other two hexagons but pointing the opposite direction, and with an intermediate width wider than the leftmost hexagon and narrower than the center hexagon.