Flag some functions as internal

Author: hadley

R/geom-defaults.r

@@ -4,6 +4,7 @@
 #'   \code{"bin"}), or a Geom/Stat object (like \code{GeomPoint} or
 #'   \code{StatBin}).
 #' @param new Named list of aesthetics.
+#' @keywords internal
 #' @export
 #' @examples
 #' update_geom_defaults("point", list(colour = "darkblue"))

R/layer.r

@@ -41,6 +41,7 @@
 #' @param params Additional parameters to the \code{geom} and \code{stat}.
 #' @param subset DEPRECATED. An older way of subsetting the dataset used in a
 #'   layer.
+#' @keywords internal
 #' @examples
 #' # geom calls are just a short cut for layer
 #' ggplot(mpg, aes(displ, hwy)) + geom_point()