+ int *index_type, const char **db,
+ int *set, int *use, const char **string_index);
+
+int zebraExplain_ord_adjust_occurrences(ZebraExplainInfo zei, int ord,
+ int term_delta, int doc_delta);
+
+int zebraExplain_ord_get_occurrences(ZebraExplainInfo zei, int ord,
+ zint *term_occurrences,
+ zint *doc_occurrences);