--- a/src/HOL/ROOT Tue Jan 07 07:03:18 2020 +0100 +++ b/src/HOL/ROOT Tue Jan 07 12:37:12 2020 +0100 @@ -237,6 +237,7 @@ Balance Tree_Map AVL_Map + RBT_Set2 RBT_Map Tree23_Map Tree234_Map