val tref_uref : Mathql.mquref -> Mathql.mqtref (* "tref of uref" conversion *)
-val locate : string -> string (* LOCATE query building function *)
+val init : unit -> unit (* INIT database function *)
+
+val close : unit -> unit (* CLOSE database function *)
-val backward : Cic.term -> string (* BACKWARD query building function *)
+val locate : string -> string (* LOCATE query building function *)
-val init : unit -> unit
-val close : unit -> unit
+val backward : Cic.term -> int -> string (* BACKWARD query building function *)