type t = out_channel
val stdout : t
val stderr : t
type 'a with_create_args = ?binary:bool -> ?append:bool -> ?perm:int -> 'a
val create : (string -> t) with_create_args
val with_file : (string -> f:(t -> 'a) -> 'a) with_create_args
val close : 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 newline : t -> unit
val output_lines : t -> string list -> unit
Outputs a list of lines, each terminated by a newline character
val seek : t -> int64 -> unit
val pos : t -> int64
val length : t -> int64
val write_lines : string -> string list -> unit
write_lines file lines works like output_lines, except that the output is sent to the named file.
val write_all : string -> data:string -> unit
write_all file data writes all data to the named file.