(*rt->retrieve)(clientData, &retrieveCtrl);
*output_format = retrieveCtrl.output_format;
*rec_bufp = (char *) retrieveCtrl.rec_buf;
(*rt->retrieve)(clientData, &retrieveCtrl);
*output_format = retrieveCtrl.output_format;
*rec_bufp = (char *) retrieveCtrl.rec_buf;