add infamy

git-svn-id: https://svn.r-project.org/R/trunk@65863 00db46b3-68df-0310-9c12-caf00c1e9a41
correct a declaration

git-svn-id: https://svn.r-project.org/R/trunk@65864 00db46b3-68df-0310-9c12-caf00c1e9a41
explain Local Mean Time, tweak wording

git-svn-id: https://svn.r-project.org/R/trunk@65866 00db46b3-68df-0310-9c12-caf00c1e9a41