The mark consists of The mark consists of an outer circle enclosing an upright square and an overlapping diamond (a circle containing two overlapping squares, with one square rotated forty-five degrees). In the center of the squares is a symbol consisting of a vertical line intersected by a horizontal line, with a circle positioned above the horizontal line enclosing an upward-pointing triangle (a smaller circle in the upper center of the design contains a solid upward-pointing triangle; a vertical stem extends downward from the base of the triangle and intersects a horizontal bar near the bottom of the smaller circle).