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.