The mark consists of stylized upper case letters in which the letter "H" is separate, whereas the letters "E", "A", "D" and "S" are connected to each other. The lower horizontal part of the "E" is connected to the lower left hand side of the "A". The lower right hand side of the "A" is connected to the lower vertical part of the "D". The curve of the "D" is connected to the upper left hand curve of the "S". The left hand vertical line of the "H" is wider below the horizontal line than the line above, and the right hand vertical line is wider above the horizontal line than the line below. The vertical line of the "E" is wider between the middle horizontal line and the lower horizontal line than between the upper horizontal line and the middle horizontal line. In the "A", the left hand angled line is wider at the lower end below the horizontal line, and wider in the right hand angled line above the horizontal line. In the "D", the vertical line is wider than the right hand curved part of the letter. In the "S", the left hand upper curve is wider than the right hand lower curve. Each of the letters is angled away from the vertical giving the impression of an italicized word.