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(*                                                                     *)
(*                                OCaml                                *)
(*                                                                     *)
(*       Nicolas Pouillard, projet Gallium, INRIA Rocquencourt         *)
(*                                                                     *)
(*  Copyright 2006 Institut National de Recherche en Informatique et   *)
(*  en Automatique.  All rights reserved.  This file is distributed    *)
(*  under the terms of the Q Public License version 1.0.               *)
(*                                                                     *)
(***********************************************************************)

(* Ask user a yes or no question. *)
val yes_or_no : string -> bool