Nothing
Implementations of functions which have been introduced in R since version 3.0.0. The backports are conditionally exported which results in R resolving the function names to the version shipped with R (if available) and uses the implemented backports as fallback. This way package developers can make use of the new functions without worrying about the minimum required R version.
Package details 


Author  Michel Lang [cre, aut] (0000000197540393) 
Maintainer  Michel Lang <[email protected]> 
License  GPL2 
Version  1.1.2 
URL  https://github.com/mllg/backports 
Package repository  View on CRAN 
Installation 
Install the latest version of this package by entering the following in R:

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