+/* Create a variable to be used for internal calculations only */
+struct variable *
+var_create_internal (int case_idx)
+{
+ struct variable *v = var_create ("$internal", 0);
+
+ struct vardict_info vdi;
+
+ vdi.dict = NULL;
+ vdi.dict_index = 0;
+ vdi.case_index = case_idx;
+
+ var_set_vardict (v, &vdi);
+
+ return v;
+}
+