avoid using unnecessary LaTeX packages (specifically paralist)

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/prefmod@241 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
improved description of latest changes

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/prefmod@242 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
some streamlining

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/prefmod@243 edb9625f-4e0d-4859-8d74-9fd3b1da38cb