diff -r 4f6e2965d821 -r 05ab37be94ed NEWS --- a/NEWS Wed Jul 13 23:41:13 2011 +0200 +++ b/NEWS Wed Jul 13 23:49:56 2011 +0200 @@ -60,7 +60,7 @@ *** HOL *** -* classes bot and top require underlying partial order rather than preorder: +* Classes bot and top require underlying partial order rather than preorder: uniqueness of bot and top is guaranteed. INCOMPATIBILITY. * Archimedian_Field.thy: