∀ {α : Type u} {β : Type v} [inst : Ord α] [Std.TransOrd α] (t : Std.DTreeMap.Internal.Impl α fun x => β),
  t.Ordered →
    ∀ (bound : α),
      Std.Slice.toList (Std.Ric.Sliceable.mkSlice t *...=bound) =
        List.filter (fun e => (compare e.1 bound).isLE) (Std.DTreeMap.Internal.Impl.Const.toList t)