(** Represent the {!module:Sheet} *)

type screen

(** Initialise thee screen *)
val init: unit -> screen

val close: screen -> unit

(** {2 Screen updates} *)

val draw: Sheet.t -> screen -> screen

val draw_input: Sheet.t -> screen -> screen

val resize: Sheet.t -> screen -> screen 

(** Display a message in the status bar. *)
val status: screen -> UTF8.t -> unit

(** {2 User inputs} *)

(** Wait for a keycode *)
val read_key : screen -> string
(** The keycode is always NULL terminated *)

val search: screen -> UTF8.t

val get_cell: screen -> int * int -> (int * int) option

val editor: ?position: int * int -> ?prefix:UTF8.t -> ?init:UTF8.t -> screen -> UTF8.t option