You can search for identifiers within the package.
in-package search v0.2.0
type t
val from_string : ?fname:string -> ?lnum:int -> string -> (t, string) result
val from_channel : ?fname:string -> ?lnum:int -> in_channel -> (t, string) result
val from_file : ?fname:string -> ?lnum:int -> string -> (t, string) result