Improve HTML generation.

git-svn-id: https://svn.r-project.org/R/trunk@65981 00db46b3-68df-0310-9c12-caf00c1e9a41
update

git-svn-id: https://svn.r-project.org/R/trunk@65982 00db46b3-68df-0310-9c12-caf00c1e9a41
update

git-svn-id: https://svn.r-project.org/R/trunk@65984 00db46b3-68df-0310-9c12-caf00c1e9a41
Fix bad link to manuals

git-svn-id: https://svn.r-project.org/R/trunk@65985 00db46b3-68df-0310-9c12-caf00c1e9a41
Fix paragraph calculation.

git-svn-id: https://svn.r-project.org/R/trunk@65986 00db46b3-68df-0310-9c12-caf00c1e9a41
Improve HTML.

git-svn-id: https://svn.r-project.org/R/trunk@65987 00db46b3-68df-0310-9c12-caf00c1e9a41