add some comments

git-svn-id: http://svn.r-project.org/R/branches/R-3-0-branch@62190 00db46b3-68df-0310-9c12-caf00c1e9a41
port r62192 from trunk

git-svn-id: http://svn.r-project.org/R/branches/R-3-0-branch@62193 00db46b3-68df-0310-9c12-caf00c1e9a41
port r62194 from trunk

git-svn-id: http://svn.r-project.org/R/branches/R-3-0-branch@62195 00db46b3-68df-0310-9c12-caf00c1e9a41
port c62196 from trunk

git-svn-id: http://svn.r-project.org/R/branches/R-3-0-branch@62197 00db46b3-68df-0310-9c12-caf00c1e9a41
ported r62198 [print.Latex(...)] from trunk

git-svn-id: http://svn.r-project.org/R/branches/R-3-0-branch@62199 00db46b3-68df-0310-9c12-caf00c1e9a41
maintainer-mode changes

git-svn-id: http://svn.r-project.org/R/branches/R-3-0-branch@62200 00db46b3-68df-0310-9c12-caf00c1e9a41
sweep up from trunk

git-svn-id: http://svn.r-project.org/R/branches/R-3-0-branch@62201 00db46b3-68df-0310-9c12-caf00c1e9a41
port r62202 from trunk

git-svn-id: http://svn.r-project.org/R/branches/R-3-0-branch@62203 00db46b3-68df-0310-9c12-caf00c1e9a41
port r62204 from trunk

git-svn-id: http://svn.r-project.org/R/branches/R-3-0-branch@62205 00db46b3-68df-0310-9c12-caf00c1e9a41
port r62206 from trunk

git-svn-id: http://svn.r-project.org/R/branches/R-3-0-branch@62210 00db46b3-68df-0310-9c12-caf00c1e9a41
port r62211 from trunk

git-svn-id: http://svn.r-project.org/R/branches/R-3-0-branch@62212 00db46b3-68df-0310-9c12-caf00c1e9a41
port r62213 from trunk

git-svn-id: http://svn.r-project.org/R/branches/R-3-0-branch@62214 00db46b3-68df-0310-9c12-caf00c1e9a41
update

git-svn-id: http://svn.r-project.org/R/branches/R-3-0-branch@62215 00db46b3-68df-0310-9c12-caf00c1e9a41
port r62216 from trunk

git-svn-id: http://svn.r-project.org/R/branches/R-3-0-branch@62217 00db46b3-68df-0310-9c12-caf00c1e9a41
port r62218 from trunk

git-svn-id: http://svn.r-project.org/R/branches/R-3-0-branch@62219 00db46b3-68df-0310-9c12-caf00c1e9a41
Merged 62220 (NAMED issues from R Neal) from trunk.


git-svn-id: http://svn.r-project.org/R/branches/R-3-0-branch@62221 00db46b3-68df-0310-9c12-caf00c1e9a41
port r62223 from trunk

git-svn-id: http://svn.r-project.org/R/branches/R-3-0-branch@62224 00db46b3-68df-0310-9c12-caf00c1e9a41
port r62225 from trunk

git-svn-id: http://svn.r-project.org/R/branches/R-3-0-branch@62226 00db46b3-68df-0310-9c12-caf00c1e9a41
port r62227 from trunk

git-svn-id: http://svn.r-project.org/R/branches/R-3-0-branch@62228 00db46b3-68df-0310-9c12-caf00c1e9a41
port r62229 from trunk

git-svn-id: http://svn.r-project.org/R/branches/R-3-0-branch@62230 00db46b3-68df-0310-9c12-caf00c1e9a41