You can search for identifiers within the package.
in-package search v0.2.0
val init : string -> unit
val init_with_array : string -> int array -> bool -> unit
val mark : string -> int -> unit
val mark_array : string -> int array -> unit
val register_hooks : (unit -> unit) -> (unit -> unit) -> unit
val get_hooks : unit -> (unit -> unit) * (unit -> unit)