src/Pure/PIDE/isar_document.ML

     (fn [old_id_string, new_id_string, edits_yxml, headers_yxml] => Document.change_state (fn state =>
       let
         val old_id = Document.parse_id old_id_string;
         val new_id = Document.parse_id new_id_string;
         val edits = YXML.parse_body edits_yxml |>
-          let open XML_Data.Dest
+          let open XML_Data.Decode
           in list (pair string (option (list (pair (option int) (option int))))) end;
         val headers = YXML.parse_body headers_yxml |>
-          let open XML_Data.Dest
+          let open XML_Data.Decode
           in list (pair string (triple string (list string) (list string))) end;
 
       val await_cancellation = Document.cancel_execution state;
       val (updates, state') = Document.edit old_id new_id edits headers state;
       val _ = await_cancellation ();