This part of ISO 10303 specifies the resource constructs for the explicit geometric and topological
representation of the shape of a product. The scope is determined by the requirements for the explicit
representation of an ideal product model; tolerances and implicit forms of representation in terms of
features are out of scope. The geometry in clause 4 and the topology in clause 5 are available for use
independently and are also extensively used by the various forms of geometric shape model in clause 6.
In addition, this part of ISO 10303 specifies specialisations of the concepts of representation where the
elements of representation are geometric.