It's an odd situation, but occasionally you need to convert your data to run on an older version of an application rather than the typical upgrade to newer versions. One such situation arose for me recently. I was starting a new project and was beginning to add/change code while working from home after-hours, with obviously no server admins around to IM a request for a new subversion repository. Being the agile developer I am, I figured I'd just create a local repository and upload it when I was next at the office.