`sig
type t
val create : int -> Rope.Buffer.t
val clear : Rope.Buffer.t -> unit
val reset : Rope.Buffer.t -> unit
val length : Rope.Buffer.t -> int
val add_char : Rope.Buffer.t -> char -> unit
val add_string : Rope.Buffer.t -> string -> unit
val add_substring : Rope.Buffer.t -> string -> int -> int -> unit
val add_rope : Rope.Buffer.t -> Rope.rope -> unit
val add_channel : Rope.Buffer.t -> Stdlib.in_channel -> int -> unit
val add_buffer : Rope.Buffer.t -> Rope.Buffer.t -> unit
val contents : Rope.Buffer.t -> Rope.rope
val sub : Rope.Buffer.t -> int -> int -> Rope.rope
val nth : Rope.Buffer.t -> int -> char
end`