This is a Bi-Lateral system found in the 10401 booklet, I was flipping through the pages and looking at the designs when I noticed a bi-lateral system used in the bottom portion of the text, I found it fit well with the over all design and keeps the piece organized but it gives it the feel of a restaurant menu. I think in this case a bi-lateral system suits the need and that it makes the overall design feel cohesive .