CADCSC[1] is a large CADCSC software system. lt has a characteristic interactive man-machine interface, a comprehensive command system, and plentiful design functions.In order to meet the urgent needs of user's to expand and clip the function of the system, an automatic generating system of it called CADCSCG has been developped. This article gives the data structure and system structure of theCADCSC G system and the redesign method of CADCSC 2.0.
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