ABSTRACT
Before designing interfaces, we need to establish a common language for discussing interfaces. In this way, we can explore, critique, and describe interfaces more consistently.
Although finished interfaces are perceived as integral objects, interfaces are created from many levels of nested designed objects. At the lowest level we have the design of individual pixels, and at the highest level we have large interface structures of multiple displays. The amount of freedom that is possible in working on a virtual display surface magnifies the number of design decisions that need to be made and the number of errors that can occur in designing interfaces.
