dataset_set_dict (ds, mtf.dict);
mtf.dict = NULL;
proc_set_source (ds, storage_source_create (mtf.output));
mtf.output = NULL;
dataset_set_dict (ds, mtf.dict);
mtf.dict = NULL;
proc_set_source (ds, storage_source_create (mtf.output));
mtf.output = NULL;