C++Class-class          Reflection information for an internal c++
                        class
C++Object-class         c++ internal objects
C++ObjectS3-class       Class "C++ObjectS3"
Module                  Retrieves an Rcpp module
Module-class            Rcpp modules
Rcpp-package            R / C++ interface
Rcpp.package.skeleton   Create a skeleton for a new package depending
                        on Rcpp
RcppUnitTests           Rcpp : unit tests results