`sig
type t
val make : Pdfunits.t -> float -> float -> Pdfpaper.t
val unit : Pdfpaper.t -> Pdfunits.t
val width : Pdfpaper.t -> float
val height : Pdfpaper.t -> float
val landscape : Pdfpaper.t -> Pdfpaper.t
val a0 : Pdfpaper.t
val a1 : Pdfpaper.t
val a2 : Pdfpaper.t
val a3 : Pdfpaper.t
val a4 : Pdfpaper.t
val a5 : Pdfpaper.t
val a6 : Pdfpaper.t
val a7 : Pdfpaper.t
val a8 : Pdfpaper.t
val a9 : Pdfpaper.t
val a10 : Pdfpaper.t
val usletter : Pdfpaper.t
val uslegal : Pdfpaper.t
end`