# Defunct in R 2.0.0
package.contents(pkg, lib.loc = NULL)
# Defunct in R 2.2.0
CRAN.packages(CRAN = getOption("repos"), method, contriburl = contrib.url(CRAN))
# Defunct in R 2.14.0
zip.file.extract(file, zipname = "R.zip", unzip = getOption("unzip"), dir = tempdir())
windows
zip.unpack(zipname, dest)