This is CVS tag 'VERSION4_0'. Possibly only some of the files in the repository were tagged. The CVS tag was presented in the subversion repository: SVN Path: http://gpitrsvn.gpi.uni-karlsruhe.de/repos/TFSoftware/tags/src SVN Revision: 177 SVN UUID: 67feda4a-a26e-11df-9d6e-31afc202ad0c