The design of the inside pages is built on two elements: typeface and grid. Both are constants, but neither is governed by strict rules. This openness allows for a flexible response to the material and content, enabling each page to be designed individually. The second constant: We use Berthold Akzidenz Grotesk, the typeface originally employed for the wayfinding system at Tegel Airport. It is used in a single size, regardless of the type of text. Essays, author names, page numbers, titles, and captions are not differentiated by scale. We use 11 point — unusually large for body text, unusually small for a headline. Attention is provoked through restraint and monotony. The second constant is a hexagonal grid. The unconventional proportions and spacing it produces hold the pages together visually, without the underlying structure being immediately apparent to the viewer. The pages feel openly composed.