Several design elements appear on this spread from chapter 7. Starting in the upper left, there's the end of a long chapter introduction and the outline of the chapter topics. The level-one head is Univers Extrablack Extended on a stripe of Zettl gold, with the level-two head just below it. The stripe of faded color with the key/lightbulb icon is a recurring numbered element -- Key Concepts -- summarized at the end of each chapter. Click on the photo of the computer to learn its genesis.