You can search for identifiers within the package.
in-package search v0.2.0
val (>>=) : ('a, [< `Disconnected | `Msg of 'b | `Unimplemented ]) result Lwt.t -> ('a -> ('c, [> `Disconnected | `Msg of 'b | `Unimplemented ] as 'd) result Lwt.t) -> ('c, 'd) result Lwt.t