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The NIST PDES Toolkit: Technical Fundamentals



Steve Clark


The NIST PDES Toolkit provides a set of software tools for manipulating Express information models and STEP product models. It is a research-oriented toolkit, intended for use in a research and testing environment. This document gives a technical introduction to the Toolkit, providing a programmer with basic knowledge of its structure. Also covered are the mechanics of building Toolkit-based applications.
NIST Interagency/Internal Report (NISTIR) - 4335
Report Number


express, PDES, product models, STEP


Clark, S. (1990), The NIST PDES Toolkit: Technical Fundamentals, NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD, [online], (Accessed June 19, 2024)


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Created February 1, 1990, Updated November 10, 2018