delete 4

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/erpr@16 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
delete 5

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/erpr@17 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
add erp.functions

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/erpr@18 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
add erp.functions.Rd

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/erpr@19 edb9625f-4e0d-4859-8d74-9fd3b1da38cb