int zebraExplain_lookup_ord (ZebraExplainInfo zei, int ord,
int *index_type, const char **db,
int zebraExplain_lookup_ord (ZebraExplainInfo zei, int ord,
int *index_type, const char **db,
int zebraExplain_trav_ord(ZebraExplainInfo zei, void *handle,
int (*f)(void *handle, int ord));
int zebraExplain_trav_ord(ZebraExplainInfo zei, void *handle,
int (*f)(void *handle, int ord));