+/* Titles. */
+void pivot_table_set_title (struct pivot_table *, struct pivot_value *);
+void pivot_table_set_subtype (struct pivot_table *, struct pivot_value *);
+void pivot_table_set_corner_text (struct pivot_table *, struct pivot_value *);
+void pivot_table_set_caption (struct pivot_table *, struct pivot_value *);
+