enum var_type var_get_type (const struct variable *);
int var_get_width (const struct variable *);
void var_set_width (struct variable *, int width);
+
+typedef bool var_predicate_func (const struct variable *);
+
bool var_is_numeric (const struct variable *);
bool var_is_alpha (const struct variable *);
bool var_is_short_string (const struct variable *);