[R] Viewing source code for .Internal functions

[Sarah Touati]

I am trying to view the source code of the function nlm in the stats 
package of R 2.4.1.

I downloaded the source from CRAN and opened nlm.R, and it calls a 
.Internal function:

.Internal(nlm(function(x) f(x, ...), p, hessian, typsize, fscale,
                  msg, ndigit, gradtol, stepmax, steptol, iterlim))

This is the same thing I saw when entering the function name at the R 
command prompt. Where will I find the actual code?

Thanks.