Software must be designed. Unfortunately, traditional techniques of object-oriented design have no widely applicable way of providing a structure for designs. Any object may interact with any other object in any way the designer wishes. As a result, designs are often disorganized, leading to delays and poor quality. In fact, one may observe that developers on most projects spend most of their time debugging poorly structured code. The IDAR method of object-oriented design causes each design to form a hierarchy of abstractions (i.e., levels of control), with rules guiding how objects may...