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Providing CAD Object Management Services through a Base Class Library
HP PE/SolidDesigner's data structure manager makes it possible to save a complex 3D solid model and load it from file systems and databases. Using the concepts of transactions and bulletin boards, it keeps track of changes to a model, implements an undo operation, and notifies external applications of changes.
by Claus Brod and Max R. Kublin
 Article 5 - oct95a5.pdf
Exception Handling and Development Support - oct95a5a.pdf
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