You can search for identifiers within the package.
in-package search v0.2.0
type color = int
val save : ?edge:(int -> int option) -> 'a t -> string -> unit
val level_curves : ?boundary:(int -> int option) -> 'a t -> 'a vec -> ?level_eq:(float -> float -> bool) -> (float * int) list -> string -> unit
val super_level : ?boundary:(int -> int option) -> 'a t -> 'a vec -> float -> int -> string -> unit
val sub_level : ?boundary:(int -> int option) -> 'a t -> 'a vec -> float -> int -> string -> unit