[R] Calling "compiled" functions

[rkevinburton at charter.net]

In the scripts I see lots of calls like .Call(xxxx.....). But if I replace this exact string in my own R script I get xxxx not found. I was wondering what the scopting rules are for these functions. How just for testing (I don't want to build a full blown package) to I use .Call and .C or .Fortran foreign function calls?

Thank you.

Kevin