You can search for identifiers within the package.
in-package search v0.2.0
type +'a t
val iter : ('a -> unit) -> 'a t -> unit
val elements : 'a t -> 'a list
val cardinal : 'a t -> int
val exists : ('a -> bool) -> 'a t -> bool
val for_all : ('a -> bool) -> 'a t -> bool