+
+ /* The variables holding the categorical values */
+ const struct variable **var;
+ int n_vars;
+
+ int widths[2];
+
+ /* A hash table of struct category indexed by VAL */
+ struct hmap primaries;
+
+ /* A hash table of struct category indexed by VAL */
+ struct hmap secondaries;
+
+
+ /* A array of pointers to the members of the above hmap,
+ sorted by VAL */
+ struct category **ss;