--- a/NEWS Fri Jun 24 15:05:04 2022 +0200 +++ b/NEWS Fri Jun 24 10:49:40 2022 +0200 @@ -52,6 +52,7 @@ monotone_onD monotone_onI monotone_on_empty[simp] + monotone_on_o monotone_on_subset * Theory "HOL.Relation":