+ present:GrafiteTypes.status -> ?past:GrafiteTypes.status -> unit -> unit
+
+ (* 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
+*)