scope:

In scope

This document is applicable to:

- the Presentation of 3D geometrical dimension and tolerance, and 3D annotation attributes;

- their possible semantic links with 3D Geometric shape;

- User Defined Attributes: that are assigned to 3D geometric entities or at the part level.

For the purpose of this document, the semantic definition is at the level that supports associative "Cross-highlighting", to illustrate the portion of the geometry to which a PMI element applies.

In this version, the technology used to preserve this 3D information is based on polyline and tessellated presentation. Polyline presentation is a conversion to lines and curves of all 3D annotations by the STEP interfaces of the CAD system, including validation properties. Tessellated presentation is a conversion to tessellated curves and tessellated faces. The main use cases are the Certification and Product Liability of static information, however, re-use is also possible after the deletion of previous PMI and creation of new PMI (refer to clause 3 for definition).

Out of scope

This document does not apply to:

- machine-interpretable PMI "Representation";

- how to preserve additional information:

- property rights;

- form features;

- machining features;

- CAD Assemblies.