+val profile : ?enable:bool -> string -> profiler
+val set_profiling_printings : (unit -> bool) -> unit
+
+(** {2 Localized exceptions } *)
+
+exception Localized of Token.flocation * exn
+
+val loc_of_floc: Token.flocation -> int * int
+val floc_of_loc: int * int -> Token.flocation
+
+val dummy_floc: Lexing.position * Lexing.position