Every VSS file keeps a detailed record of its history. From the History dialog box, you can view version information, comments, and general details of a file's history, as well as get an old version of a file or check it out.
Note Only files can be checked out from the History dialog box; projects cannot be checked out.
You can also do gets, checkouts, differences, pins, unpins, rollbacks, and reports from the History dialog box.
For information on how to view file history, refer to: