The mark consists of Triangle with lower case "e' inside and below bottom edge of triangle and with bottom of the "e" extending in a straight line at an approximate 45 degree angle through the right side of the triangle. The top portion of the "e" inside the triangle is titled apptoximately 45 degrees downwards towards the left side of the triangle and the bottom of the "e" juts out slightly below the bottom of the triangle. The words "effective edge'" in lower case cursive script are set out below triangle and extend past both ends of the bottom of the triangle. Additionally, there is a thin blank line inserted through the top portion of the each "f" in "effective" and the dot in the "I" and the top portion of the "d" to simulate an edge. The dot in the "I" and the top of the "d" are triangular in shape so as to simulate a mountain slope.