val list_wins : tabpage:t -> Vcaml__.Types.Window.t list Core.Or_error.t Api_call.t
val get_var : tabpage:t -> name:string -> Msgpack.t Core.Or_error.t Api_call.t
val set_var : tabpage:t -> name:string -> value:Msgpack.t -> unit Core.Or_error.t Api_call.t
val del_var : tabpage:t -> name:string -> unit Core.Or_error.t Api_call.t
val get_win : tabpage:t -> Vcaml__.Types.Window.t Core.Or_error.t Api_call.t
val get_number : tabpage:t -> int Core.Or_error.t Api_call.t
val is_valid : tabpage:t -> bool Core.Or_error.t Api_call.t