You can search for identifiers within the package.
in-package search v0.2.0
type 'a t
module Core : sig ... end
include module type of Core
include OBMonad.Kernel1 with type 'a t := 'a t
val return : 'a -> 'a t
val bind : 'a t -> ('a -> 'b t) -> 'b t
module Infix : sig ... end