$ svn mkdir http://svn.example.com/repos/calc/branches -m “make the branches directory to hold all the branches”
$ svn copy http://svn.example.com/repos/calc/trunk http://svn.example.com/repos/calc/branches/my-calc-branch -m “Creating a private branch of /calc/trunk.”
$ svn checkout http://svn.example.com/repos/calc/branches/my-calc-branch
SVN: Using Branches