Package names or remote package specifications to install.
lib
Package library to install the packages to. Note that all
dependent packages will the be installed here, even if they are
already installed in another library.
upgrade
Whether to upgrade already installed packages to the
latest available version. If this is FALSE, then only packages
that need updates to satisfy version requirements, will be updated.
If it is TRUE, all specified or dependent packages will be updated
to the latest available version.
ask
Whether to ask for confirmation.
Value
Data frame, with information about the installed package(s).