still debugging qti 2.1 code

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/exams@620 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
still working on qti 2.1 implementation

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/exams@621 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
still working on qti 2.1 implementation

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/exams@622 edb9625f-4e0d-4859-8d74-9fd3b1da38cb