add ttt in the description in refund.wave

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/refund@176 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
remove ttt in description file

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/refund@177 edb9625f-4e0d-4859-8d74-9fd3b1da38cb