diff -r 08690b7c0568 -r 0f6f1cd500e5 src/HOL/Calculation.thy
--- a/src/HOL/Calculation.thy	Fri Feb 09 20:34:42 2001 +0100
+++ b/src/HOL/Calculation.thy	Fri Feb 09 23:48:33 2001 +0100
@@ -154,6 +154,7 @@
 *}
 
 lemmas basic_trans_rules [trans] =
+  forw_subst
   order_less_subst2
   order_less_subst1
   order_le_less_subst2
@@ -166,7 +167,6 @@
   ord_eq_le_subst
   ord_less_eq_subst
   ord_eq_less_subst
-  forw_subst
   back_subst
   dvd_trans
   rev_mp