The title Architectural and Program Diagrams in the series Construction and Design Manual brings together more than 600 pages from a predominantly international avant-garde and offers an overview of the state of the art in architectural representation across a spectrum extending from simple arrow diagrams to sober graphs and highly elaborate, often somewhat surreal collages and computer animations which trigger a wide range of intellectual and emotional responses. Diagrams tell stories. Those able to read them can follow the process by which ideas and thoughts take visual shape, find aesthetic form and, if all goes well, become part of the built environment.