∀ {X : Type u_1} [inst : LinearOrder X] [inst_1 : TopologicalSpace X] [OrderTopology X] (a b : X),
  autoParam (Order.IsSuccPrelimit b) comap_coe_Ioo_nhdsLT._auto_1 →
    Filter.comap Subtype.val (nhdsWithin b (Set.Iio b)) = Filter.atTop