(* *)
(**************************************************************************)
+include "ground_2/xoa/and_4.ma".
+include "ground_2/xoa/ex_4_2.ma".
+include "ground_2/xoa/or_4.ma".
include "static_2/notation/relations/supterm_6.ma".
include "static_2/notation/relations/supterm_7.ma".
include "static_2/syntax/lenv.ma".