This help topic is for R version 2.9.0. For the current version of R, try
https://stat.ethz.ch/R-manual/R-patched/library/base/html/identity.html
identity {base}
R Documentation
Identity function
Description
A trivial identity function returning its argument.
Usage
identity(x)
Arguments
x
an
R
object.
[
Package
base
version 2.9.0
]