diff --git a/smartPrint.ml b/smartPrint.ml
index 8d1479a..90598b7 100644
--- a/smartPrint.ml
+++ b/smartPrint.ml
@@ -1,3 +1,6 @@
+external (|>) : 'a -> ('a -> 'b) -> 'b = "%revapply";;
+external ( @@ ) : ('a -> 'b) -> 'a -> 'b = "%apply"
+
 (* Separators. *)
 module Break = struct
   (* A break can be a whitespace or a newline if the text has to be splited. *)
@@ -418,4 +421,4 @@ let to_out_channel (width : int) (tab : int) (c : out_channel) (d : t) : unit =
     (output_char c) (output_string c) output_sub_string d
 
 let to_stdout (width : int) (tab : int) (d : t) : unit =
-  to_out_channel width tab stdout d
\ No newline at end of file
+  to_out_channel width tab stdout d