This part of ISO 10303 specifies the integrated generic resources for associating elements of representation into distinct collections. It provides a basis for distinguishing, within a set of such elements, which elements are related and which elements are not. This part also includes structure for specifying the relationships among these collections, including transformation of one representation as it participates in such a relationship.

The following are within scope of this part of ISO 10303:

• the specification of distinct unrelated contexts for representation;
• the specitication of elements of representation;
• the association of elements of representation with one or more contexts in which they are combined to represent a concept;
• the association of elements of representation such that one defines another;
• a structure for relating two representations such that one participates in the definition of the other;
• a structure for relating two representations in which one does not participate in the definition of the other;
• constraints to prevent the recursive definition of instances of an element of representation;
• the specification of the process to transform one element of representation into another by specifying an element of the process before the application of the process and that element of the process after application of the process;
• the specification of the process to transform one element of representation into another by specifying the transforming function.

The following are outside the scope of this part of ISO 10303:

• the complete specification of the types of representation, types of elements of representation, and types of representation context;
• the specification of the uses of representation;
• the association of representation with any of its possible uses;
• constraints requiring a directed relationship between representations;
• constraints forbidding cyclic structures of related representations;
• constraints requiring a directed relationship between the contexts in which related representations exist;
• constraints forbidding cyclic structures of relationships between representation contexts.