You can search for identifiers within the package.
in-package search v0.2.0
val keys : ('a, 'b) Hashtbl.t -> 'a list
val values : ('a, 'b) Hashtbl.t -> 'b list
val length : ('a, 'b) Hashtbl.t -> int
val items : ('a, 'b) Hashtbl.t -> ('a * 'b) list
val map : ('a -> 'b -> 'c) -> ('a, 'b) Hashtbl.t -> 'c list
val merge : ('a, 'b) Hashtbl.t -> ('a, 'b) Hashtbl.t -> unit
val convkeys : ('a, 'b) Hashtbl.t -> ('a -> 'a) -> unit