-void extract_flushRecordKeys (ZebraHandle zh, SYSNO sysno,
- int cmd, zebra_rec_keys_t reckeys,
- zint staticrank);
-void extract_flushSortKeys (ZebraHandle zh, SYSNO sysno,
- int cmd, zebra_rec_keys_t skp);
-void extract_schema_add (struct recExtractCtrl *p, Odr_oid *oid);
-void extract_token_add (RecWord *p);
-int explain_extract (void *handle, Record rec, data1_node *n);