** run svn diff -c 9238 to see the patch itself
* svn merge -c 9238 = merge changeset r9238 into your working copy
* svn merge -r LastRevisionMergedFromTrunkToBranch:HEAD url/of/trunk path/to/branch/wc
* svn switch http://svn.example.com/repos/calc/branches/my-calc-branch
** switch transforms an existing working copy to reflect a different branch