diff --git a/googleApps.ml b/googleApps.ml
index b55311f..757a0e6 100644
--- a/googleApps.ml
+++ b/googleApps.ml
@@ -1,5 +1,7 @@
 include ([%js] : sig
 
+           val log: string -> unit [@@js.global "Logger.log"]
+
            module Date : sig
              type t
              val t_of_js: Ojs.t -> t
@@ -20,25 +22,35 @@ include ([%js] : sig
 
            module File : sig
              type t
+             type iterator
+             type blob
+             type folder
              val t_of_js: Ojs.t -> t
+
+             val get_folder_by_id: string -> folder [@@js.global "DriveApp.getFolderById"]
              val get_id: t -> string [@@js.call]
              val get_name: t -> string [@@js.call]
              val get_size: t -> int [@@js.call]
+             val get_files: unit -> iterator [@@js.global "DriveApp.getFiles"]
+             val get_file_by_id : string -> t [@@js.global "DriveApp.getFileById"]
+             val has_next: iterator -> bool [@@js.call]
+             val next: iterator -> t [@@js.call]
+             val make_copy: t -> name:string -> folder -> t [@@js.call]
+
+             val copy_blob : blob -> blob [@@js.call]
+             val get_blob_data_as_string : blob -> string [@@js.call "getDataAsString"]
+             val set_blob_data_from_string : blob -> string -> blob [@@js.call "setDataFromString"]
+             val new_blob : string -> blob [@@js.global "Utilities.newBlob"]
+             val set_blob_name: blob -> string -> blob [@@js.call "setName"]
+             val set_blob_content_type: blob -> string -> blob [@@js.call "setContentType"]
+             val blob_to_js: blob -> Ojs.t
+             val get_blob: t -> blob [@@js.call]
+             val set_content: t -> blob [@@js.call]
            end
 
-           module FileIterator : sig
-             type t
-             val get_files: unit -> t [@@js.global "DriveApp.getFiles"]
-             val t_of_js: Ojs.t -> t
-             val has_next: t -> bool [@@js.call]
-             val next: t -> File.t [@@js.call]
-           end
-
-
-           val log: string -> unit [@@js.global "Logger.log"]
-
            module Range : sig
              type t
+             val clear_format: t -> t [@@js.call]
              val get_a1_notation: t -> string [@@js.call]
              val get_background: t -> string [@@js.call]
              val set_background: t -> string -> t [@@js.call]
@@ -59,12 +71,10 @@ include ([%js] : sig
              val set_horizontal_alignment: t -> string -> t [@@js.call]
              val set_vertical_alignment: t -> string -> t [@@js.call]
              val set_number_format : t -> string -> t [@@js.call]
-           end
 
-           module NamedRange: sig
-             type t
-             val get_name: t -> string [@@js.call]
-             val get_range: t -> Range.t [@@js.call]
+             type named
+             val get_name: named -> string [@@js.call]
+             val get_range: named -> t [@@js.call]
            end
 
            module SandboxMode : sig
@@ -105,9 +115,11 @@ include ([%js] : sig
              val get_range: t -> start_row:int -> start_column:int -> num_rows:int -> num_columns:int -> Range.t [@@js.call]
              val get_data_range: t -> Range.t [@@js.call]
              val get_name: t -> string [@@js.call]
-             val get_named_ranges: t -> NamedRange.t list [@@js.call]
+             val get_named_ranges: t -> Range.named list [@@js.call]
              val add_menu: string -> Ojs.t list -> unit [@@js.global "Spreadsheet.addMenu"]
              val insert_row: t -> int -> t [@@js.call "insertRows"]
+             val hide_row: t -> int -> unit [@@js.call "hideRows"]
+             val show_row: t -> int -> unit [@@js.call "showRows"]
            end
 
            module EmailField : sig
diff --git a/googleApps.mli b/googleApps.mli
index cb18397..ac815d6 100644
--- a/googleApps.mli
+++ b/googleApps.mli
@@ -1,5 +1,7 @@
 (** OCaml binding for Google Apps (https://developers.google.com/apps-script/) *)
 
+val log : string -> unit
+
 (** Standard JavaScript Date *)
 module Date :
 sig
@@ -38,24 +40,37 @@ end
 (** Files in Google Drive. *)
 module File :
 sig
+  type folder
+  type blob
+
   type t
   val t_of_js : Ojs.t -> t
+  val get_file_by_id : string -> t
   val get_id : t -> string
   val get_name : t -> string
   val get_size : t -> int
-end
 
-(** An iterator that allows scripts to iterate over a potentially large
-collection of {!File.t}.*)
-module FileIterator :
-sig
-  type t
+  (** An iterator that allows scripts to iterate over a potentially
+large collection of {!File.t}.*)
+  type iterator
 
   (** @return a {!FileIterator.t} for all files of the drive *)
-  val get_files : unit -> t
-  val t_of_js : Ojs.t -> t
-  val has_next : t -> bool
-  val next : t -> File.t
+  val get_files : unit -> iterator
+  val has_next : iterator -> bool
+  val next : iterator -> t
+  val get_file_by_id : string -> t
+  val make_copy: t -> name:string -> folder -> t
+  val get_folder_by_id: string -> folder
+
+ val copy_blob : blob -> blob
+ val get_blob_data_as_string : blob -> string
+ val set_blob_data_from_string : blob -> string -> blob
+ val new_blob : string -> blob
+ val set_blob_name: blob -> string -> blob
+ val set_blob_content_type: blob -> string -> blob
+ val blob_to_js: blob -> Ojs.t
+ val get_blob: t -> blob
+ val set_content: t -> blob
 end
 
 (** spreadsheet ranges *)
@@ -85,14 +100,11 @@ sig
   (** 'top', 'middle' or 'bottom'e  *)
   val set_vertical_alignment: t -> string -> t
   val set_number_format : t -> string -> t
-end
-
-(** spreadsheet named ranges *)
-module NamedRange :
-sig
-  type t
-  val get_name : t -> string
-  val get_range : t -> Range.t
+  val clear_format: t -> t
+  (** spreadsheet named ranges *)
+  type named
+  val get_name : named -> string
+  val get_range : named -> t
 end
 
 module SandboxMode : sig
@@ -107,6 +119,7 @@ module HtmlOutput :
     val set_sandbox_mode : t -> SandboxMode.t -> t
     val set_title : t -> string -> t
   end
+
 module Menu :
   sig
     type t
@@ -143,9 +156,14 @@ sig
     start_column:int -> num_rows:int -> num_columns:int -> Range.t
   val get_data_range : t -> Range.t
   val get_name : t -> string
-  val get_named_ranges : t -> NamedRange.t list
+  val get_named_ranges : t -> Range.named list
   (* Insert a blank row at the specified index *)
   val insert_row: t -> int -> t
+
+  (* Hides the row at the given index. *)
+  val hide_row: t -> int -> unit
+  (* Shows the row at the given index. *)
+  val show_row: t -> int -> unit
 end
 
 (** An email field in a {!Contact.t}. *)
@@ -222,4 +240,4 @@ sig
 end
 
 
-val log : string -> unit
+