F.1 General

This annex documents the history of technical modifications made to ISO/TS 10303-1507.

F.2 Changes made in edition 2

F.2.1 Summary of changes

The second edition of this part of ISO 10303 incorporated the modifications to the first edition listed below.

The USE FROM references in the ARM and MIM have been changed from refererence to Elemental_geometric_shape module to references to Basic_curve and B_spline_geometry modules.

Additional entities and select types have been added to the MIM to define more precisely the semantics of a geometrically bounded surface. The definition of the Geometrically_bounded_surface_shape_represntation ENTITY uses a new SELECT type to define the items.

F.2.2 Changes made to the ARM

The following ARM EXPRESS declarations and interface specifications have been added:

• TYPE geometrically_bounded_surface_shape_representation_item;
• ENTITY Boundary_curve;
• ENTITY Curve_bounded_surface;
• ENTITY Surface_set.

The following ARM EXPRESS declarations and interface specifications have been modified:

• ENTITY Geometrically_bounded_surface_shape_representation.

In addition, modifications have been made to the mapping specification, the MIM schema and the EXPRESS-G diagrams to reflect and be consistent with the modifications of the ARM.

F.3 Changes made in edition 3

F.3.1 Summary of changes

This third edition of this part of ISO 10303 incorporates the modifications to the second edition listed below.

F.3.2 Changes made to the mapping

The following changes have been made to the ARM to MIM mapping:

• Boundary_curve mapping updated
• Geometrically_bounded_surface_shape_representation mapping updated

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