As you approach the library, the abstract pattern of the facade is revealed as a character array overlaid with alphabets in the world. Unlike other architects project in which they used the same system of text to the front, in the Library of the University of Cottbus, the text is only perceived as such from a middle distance, and since this graphology superimposed no contents and form coherent words, the letters serve as a generalized representation of literature stored inside. A short distance away, the letters dissolve into abstract patterns halftone: a field of white dots. The architects argue that the density of this pattern of dots is varied to control solar gain.