void *var_detach_aux (struct variable *);
void var_dtor_free (struct variable *);
-/* Observed categorical values. */
-struct cat_vals *var_get_obs_vals (const struct variable *);
-void var_set_obs_vals (const struct variable *, struct cat_vals *);
-bool var_has_obs_vals (const struct variable *);
-
/* Custom attributes. */
struct attrset *var_get_attributes (const struct variable *);
void var_set_attributes (struct variable *, const struct attrset *);