This diagram shows the integrated definitions used by STEP and STEP-NC models. In a STEP file, each ARM concept is stored as one or more instances of the integrated definitions — low-level details like cartesian points and bspline curves that are combined to describe concepts like product shape. Like a normalized database, these are designed to be stable for the long term (20+ years) and general enough for use with new ARM concepts as they appear.
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Updated 2022-02-25 with SMRLv9 updates