You can search for identifiers within the package.
in-package search v0.2.0
val combine : loc:string -> 'a list -> 'b list -> ('a * 'b) list
val rev_combine : loc:string -> 'a list -> 'b list -> ('a * 'b) list
val map2 : loc:string -> ('a -> 'b -> 'c) -> 'a list -> 'b list -> 'c list
val init : loc:string -> int -> (int -> 'a) -> 'a list