Deprecated Marking Objects as Deprecated
 Description
When an object is about to be removed from R it is first deprecated and should include a call to .Deprecated. 
Usage
.Deprecated(new, package=NULL, msg,
            old = as.character(sys.call(sys.parent()))[1L])
 Arguments
| new | character string: A suggestion for a replacement function. | 
| package | character string: The package to be used when suggesting where the deprecated function might be listed. | 
| msg | character string: A message to be printed, if missing a default message is used. | 
| old | character string specifying the function (default) or usage which is being deprecated. | 
Details
.Deprecated("<new name>") is called from deprecated functions. The original help page for these functions is often available at help("oldName-deprecated") (note the quotes). Functions should be listed in help("pkg-deprecated") for an appropriate pkg, including base. 
.Deprecated signals a warning of class deprecatedWarning with fields old, new, and package. 
See Also
base-deprecated and so on which list the deprecated functions in the packages. 
    Copyright (©) 1999–2012 R Foundation for Statistical Computing.
Licensed under the GNU General Public License.