You can search for identifiers within the package.
in-package search v0.2.0
type worker
val create_worker : ?port:int -> string -> worker
val declare_workers : ?port:int -> ?n:int -> string -> unit
val set_default_port_number : int -> unit
val set_pong_timeout : float -> unit
val set_ping_interval : float -> unit
type worker_type = ?port:int -> unit -> unit
type computation_status =
| Running
| Done
| Dead
module Same : sig ... end
module Poly : sig ... end
module Mono : sig ... end