sig
type t = out_channel
val stdout : t
val stderr : t
val create : ?binary:bool -> ?append:bool -> ?perm:int -> string -> t
val close : t -> unit
val close_noerr : t -> unit
val set_binary_mode : t -> bool -> unit
val flush : t -> unit
val output : t -> buf:string -> pos:int -> len:int -> unit
val output_string : t -> string -> unit
val output_char : t -> char -> unit
val output_byte : t -> int -> unit
val output_binary_int : t -> int -> unit
val output_value : t -> 'a -> unit
val seek : t -> int -> unit
val pos : t -> int
val length : t -> int
end