is_s3_generic           Determine if a function is an S3 generic or S3
                        method.
namespace_roclet        Roclet: make NAMESPACE.
rd_roclet               Roclet: make Rd files.
roxygen                 In-line documentation for R.
roxygenize              Process a package with the Rd, namespace and
                        collate roclets.
update_collate          Update Collate field in DESCRIPTION.