2 Normative references

The following standards contain provisions which, through reference in this text, constitute provisions of this part of ISO 10303. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this part of ISO 10303 are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards.

• ISO 10303-1, Industrial automation systems and integration - Product data representation and exchange - Part 1: Overview and fundamental principles.
• ISO 10303-11, Industrial automation systems and integration - Product data representation and exchange - Part 11: Description methods: The EXPRESS language reference manual.
• ISO 10303-21, Industrial automation systems and integration - Product data representation and exchange - Part 21: Clear text encoding of the exchange structure.
• ISO 10303-31, Industrial automation systems and integration - Product data representation and exchange - Part 31: Conformance testing methodology and framework: General concepts.
• ISO 10303-41, Industrial automation systems and integration - Product data representation and exchange - Part 41: Integrated generic resource: Fundamentals of product description and support.

3 Terms, definitions, and abbreviations

3.1 Terms defined in ISO 10303-5y

NOTE - The definitions in this clause will be transfered to ISO 10303-5x.

3.1.1
cell
element (deprecated)
region of 1 or higher dimension that is within a mesh

NOTE - The term 'element' is deprecated for this meaning because it implies a behaviour rather than merely a region.

3.1.2
mesh
grid (deprecated)
arrangement of regions of 1 or higher dimension with connectivity between the regions defined by the possession of common faces, edges or ends

NOTE - The term 'grid' is deprecated for this meaning because it implies a regular arrangement.

3.2 Abbreviations