(** Print page info (Mediabox etc) to standard output. *)
val output_page_info : Pdf.t -> int list -> unit

(** Given a function from page number and page to page, a document, and a list
of page numbers to apply it to, apply the function to all those pages. *)
val process_pages : (int -> Pdfpage.t -> Pdfpage.t * int * Pdftransform.transform_matrix) ->
                    Pdf.t -> int list -> Pdf.t

(** Same as [process_pages], but iterate rather than map. *)
val iter_pages : (int -> Pdfpage.t -> unit) -> Pdf.t -> int list -> unit

(** Same as [process_pages] but return the list of outputs of the map function. *)
val map_pages : (int -> Pdfpage.t -> 'a) -> Pdf.t -> int list -> 'a list