All information actually defined in a VEC file is contained in a DocumentVersion. Additionally this DocumentVersion carries all the meta-information about the underlying document (e.g. for a system schematic), This information is normally shown in drawings as a title block.
The DocumentVersion contains the information about the unique naming, a multilingual description, the DocumentNumber and so on. It has subelements to define the change history (ChangeDescription), the creation and the different approvals.
This example demonstrates how chronological relationships between PartVersion can be established. The VEC offers two types of relationships: