ISO/TS 10303-1755:2018-11 specifies the application module for
Physical connectivity definition.

The following are within the scope of
ISO/TS 10303-1755:2018-11:

• the network representation using physical component terminal identifiers;
• the lifecycle management of a network representation including make from and requirement based relationships
  between network representations;
• the representation of a functional network elaboration;
• the representation of a tree structured network to which properties may be assigned for layout and routing control purposes.