include "basic_2/notation/relations/predsubtyproper_7.ma".
include "static_2/s_transition/fqu.ma".
-include "static_2/static/rdeq.ma".
+include "static_2/static/reqx.ma".
include "basic_2/rt_transition/lpr_lpx.ma".
(* PROPER PARALLEL RST-TRANSITION FOR CLOSURES ******************************)