sig
type t
val make : Rope.rope -> int -> Rope.Iterator.t
val get : Rope.Iterator.t -> char
val peek : Rope.Iterator.t -> int -> char
val pos : Rope.Iterator.t -> int
val incr : Rope.Iterator.t -> unit
val decr : Rope.Iterator.t -> unit
val goto : Rope.Iterator.t -> int -> unit
val move : Rope.Iterator.t -> int -> unit
val rope : Rope.Iterator.t -> Rope.rope
end