--- a/Quot/quotient_info.ML	Wed Dec 09 17:05:33 2009 +0100
+++ b/Quot/quotient_info.ML	Wed Dec 09 17:16:39 2009 +0100
@@ -65,6 +65,7 @@
   val mapname = Sign.intern_const thy mapstr
   val relname = Sign.intern_const thy relstr
 
+  (* FIXME: if you don't handle the error you also get an error with a similar message: No such constant: "bla" *)
   fun check s = (Const (s, dummyT) |> Syntax.check_term ctxt)
         handle _ => error ("Constant " ^ s ^ " not declared.")
   val _ =  map check [mapname, relname]