diff --git a/build/phaser.d.ts b/build/phaser.d.ts
index ff10a516..fb4991ce 100644
--- a/build/phaser.d.ts
+++ b/build/phaser.d.ts
@@ -845,6 +845,7 @@ declare module Phaser {
         visible: boolean;
         renderable: boolean;
         width: number;
+        height: number;
         health: number;
         damage(amount: number): Phaser.Sprite;
     }
@@ -1645,9 +1646,9 @@ declare module Phaser {
         tilemap(key: string, tilesetURL: string, mapDataURL?: string, mapData?: Object, format?: string): void;
         tileset(key: string, url: string, tileWidth: number, tileHeight: number, tileMargin?: number, tileSpacing?: number, rows?: number, columns?: number, limit?: number): void;
         bitmapFont(key: string, textureURL: string, xmlURL?: string, xmlData?: Object): void;
-        atlasJSONArray(key: string, textureURL: string, atlasURL: string, atlasData: Object): void;
-        atlasJSONHash(key: string, textureURL: string, atlasURL: string, atlasData: Object): void;
-        atlasXML(key: string, textureURL: string, atlasURL: string, atlasData: Object): void;
+        atlasJSONArray(key: string, textureURL: string, atlasURL?: string, atlasData?: Object): void;
+        atlasJSONHash(key: string, textureURL: string, atlasURL?: string, atlasData?: Object): void;
+        atlasXML(key: string, textureURL: string, atlasURL?: string, atlasData?: Object): void;
         atlas(key: string, textureURL: string, atlasURL?: string, atlasData?: Object, format?: number): void;
         removeFile(key: string): void;
         removeAll(): void;
diff --git a/src/utils/Utils.js b/src/utils/Utils.js
index f1c489d7..152ca34b 100644
--- a/src/utils/Utils.js
+++ b/src/utils/Utils.js
@@ -38,9 +38,9 @@ Phaser.Utils = {
     * dir = 1 (left), 2 (right), 3 (both)
     * @method Phaser.Utils.pad
     * @param {string} str - The target string. 
-    * @param {number} len - Description.
-    * @param {number} pad - the string to pad it out with (defaults to a space).
-    * @param {number} [dir=3] the direction dir = 1 (left), 2 (right), 3 (both).
+    * @param {number} len - The number of characters to be added.
+    * @param {number} pad - The string to pad it out with (defaults to a space).
+    * @param {number} [dir=3] The direction dir = 1 (left), 2 (right), 3 (both).
     * @return {string} The padded string
     */
     pad: function (str, len, pad, dir) {