You can search for identifiers within the package.
in-package search v0.2.0
type 'a t
val empty : 'a t
val add : buffer -> int -> 'a -> 'a t -> 'a t
val pop : 'a t -> buffer * int * 'a list * 'a t
val iter : 'a t -> ('a -> unit) -> unit
val is_empty : 'a t -> bool