ISO/TS 10303-1123:2004 specifies the application module
Document definition.

The following are within the scope of
ISO/TS 10303-1123:2004:

• definition of a document version in a digital format such as an electronic file;
• definition of a document version in a non-digital format such as paper copy;
• specification of the data locating the components of a Document_definition in a
  digital or physical storage system.