more final editing

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/c060@160 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
fix caret reference

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/c060@161 edb9625f-4e0d-4859-8d74-9fd3b1da38cb
fixed some typos with spell check

git-svn-id: svn://svn.r-forge.r-project.org/svnroot/c060@162 edb9625f-4e0d-4859-8d74-9fd3b1da38cb