The original purpose of the book was to introduce a standard nomenclature of disease names, and the attributes are o r g a n i z e d in conventional medical form: a d e f i n i t i o n consists of a brief d e s c r i p t i o n of the relevant symptoms, signs, laboratory findings, and the like. Each disease is, in addition, assigned to one (or at most two) of eleven disease categories which enumerate p h y s i o l o g i c a l systems (skin, respiratory, cardiovascular, etc.).
