1 files changed, 5 insertions, 0 deletions
diff --git a/lib/cString.mli b/lib/cString.mli
index 18679d3108..c9ff60f763 100644
--- a/lib/cString.mli
+++ b/lib/cString.mli
@@ -88,12 +88,17 @@ sig
   val is_sub : string -> string -> int -> bool
   (** [is_sub p s off] tests whether [s] contains [p] at offset [off]. *)
 
+  (** {6 Generic operations} **)
+
   module Set : Set.S with type elt = t
   (** Finite sets on [string] *)
 
   module Map : Map.S with type key = t
   (** Finite maps on [string] *)
 
+  val hcons : string -> string
+  (** Hashconsing on [string] *)
+
 end
 
 include ExtS