+ (* also resets the imperative part of the status
+ * init: the baseuri of the current script *)
+val init: LexiconEngine.status -> string -> GrafiteTypes.status
+
+(*
+ (* just an empty status, does not reset imperative
+ * part, use push/pop for that *)
+val initial_status: string -> GrafiteTypes.status
+*)
+
+ (* preserve _only_ imperative parts of the status *)
+val push: unit -> unit
+val pop: unit -> unit