diff --git a/ui/action-bar/action-bar-common.ts b/ui/action-bar/action-bar-common.ts
index 6220dff13..7f50ed917 100644
--- a/ui/action-bar/action-bar-common.ts
+++ b/ui/action-bar/action-bar-common.ts
@@ -158,7 +158,7 @@ export class ActionBar extends view.View implements dts.ActionBar {
         }
     }
 
-    public shouldShow(): boolean {
+    public _shouldShow(): boolean {
         if (this.title ||
             (this.android && this.android.icon) ||
             this.navigationButton ||
diff --git a/ui/action-bar/action-bar.d.ts b/ui/action-bar/action-bar.d.ts
index 8c454ef4a..2d86075e7 100644
--- a/ui/action-bar/action-bar.d.ts
+++ b/ui/action-bar/action-bar.d.ts
@@ -1,42 +1,94 @@
-declare module "ui/action-bar" {
+/**
+ * Contains the action bar related classes.
+ */
+declare module "ui/action-bar" {
     import observable = require("data/observable");
     import view = require("ui/core/view");
     import dependencyObservable = require("ui/core/dependency-observable");
     import bindable = require("ui/core/bindable");
     import pages = require("ui/page");
 
+    /**
+     * Provides an abstraction over the ActionBar (android) and NavigationBar (iOS).
+     */
     export class ActionBar extends view.View implements view.AddArrayFromBuilder, view.AddChildFromBuilder {
+        
+        /**
+         * Gets or sets the action bar title.
+         */
         title: string;
 
-        navigationButton: NavigationButton;
-        actionItems: ActionItems;
+        /**
+         * Gets or sets the title view. When set - replaces the title with a custom view.
+         */
         titleView: view.View;
-
+        
+        /**
+         * Gets or sets the navigation button (a.k.a. the back button).
+         */
+        navigationButton: NavigationButton;
+        
+        /**
+         * Gets the collection of action items.
+         */
+        actionItems: ActionItems;
+        
+        /**
+         * Gets the android specific options of the action bar.
+         */
         android: AndroidActionBarSettings;
 
+        /**
+         * Gets the page that contains the action bar.
+         */
         page: pages.Page;
 
-        shouldShow(): boolean
-
+        /**
+         * Updates the action bar.
+         */
         update();
 
         //@private
+        _shouldShow(): boolean
         _updateAndroid(menu: android.view.IMenu);
         _onAndroidItemSelected(itemId: number): boolean
 
         _addArrayFromBuilder(name: string, value: Array<any>): void;
         _addChildFromBuilder(name: string, value: any): void;
-
         //@endprivate
     }
 
+    /**
+     * Represents a collection of ActionItems.
+     */
     export class ActionItems {
+        /**
+         * Adds an item to the collection.
+         * @param item - the item to be added
+         */
         addItem(item: ActionItem): void;
+        
+        /**
+         * Removes an item to the collection.
+         * @param item - The item to be removed.
+         */
         removeItem(item: ActionItem): void;
+        
+        /**
+         * Gets an array of the current action items in the collection.
+         */
         getItems(): Array<ActionItem>;
+        
+        /**
+         * Gets an item at a specified index.
+         * @param index - The index.
+         */
         getItemAt(index: number): ActionItem;
     }
 
+    /**
+     * Base class for action items.
+     */
     export class ActionItemBase extends bindable.Bindable {
         /**
          * String value used when hooking to tap event.
@@ -53,8 +105,19 @@
          */
         public static iconProperty: dependencyObservable.Property;
 
+        /**
+         * Gets or sets the text of the action item.
+         */
         text: string;
+        
+        /**
+         * Gets or sets the icon of the action item.
+         */
         icon: string;
+        
+        /**
+         * Gets the action bar that contains the action item.
+         */
         actionBar: ActionBar;
 
         /**
@@ -75,24 +138,70 @@
         //@endprivate
     }
 
+    /**
+     * Represents an action item in the action bar.
+     */
     export class ActionItem extends ActionItemBase {
+        /**
+         * Gets the iOS specific options of the action item.
+         */
         ios: IOSActionItemSettings;
+        
+        /**
+         * Gets the Android specific options of the action item.
+         */
         android: AndroidActionItemSettings;
     }
     
+    /**
+     * Represents Android specific options of the action item.
+     */
     export interface AndroidActionItemSettings {
+        /**
+         * Gets or sets the position of the action item in the action bar.
+         *  1. actionBar - item is shown in the action bar.
+         *  2. actionBarIfRoom - item is shown in the action bar if there is room for it. Otherwise it is put in the popup menu.
+         *  3. popup - item is shown in the popup menu.
+         */
         position: string;
     }
     
+    /**
+     * Represents Android specific options of the action item.
+     */
     export interface IOSActionItemSettings {
+        /**
+         * Gets or sets the position of the action item in the action bar.
+         *  1. left - items is shown at the left part of the navigation bar. This is the default value.
+         *  2. right - items is shown at the right part of the navigation bar.
+         */
         position: string;
     }
 
+    /**
+     * Represents Android specific options of the action bar.
+     */
     export interface AndroidActionBarSettings {
+        
+        /**
+         * Gets or sets the action bar icon.
+         */
         icon: string;
+        
+        /**
+         * Gets or sets the visibility of the action bar icon.
+         * The icon is visible by default in pre-lollipop (API level < 20) versions of android and is hidden in lollipop (API level >= 20)
+         * The possible values are:
+         *  1. auto - the default behavior. This is the default value.
+         *  2. always - the icon is aways shown.
+         *  3. never - the icon is aways hidden.
+         */
         iconVisibility: string;
     }
-    
+
+    /**
+     * Represents the navigation (a.k.a. "back") button.
+     */
     export class NavigationButton extends ActionItemBase {
 
     }
diff --git a/ui/frame/frame.ios.ts b/ui/frame/frame.ios.ts
index 61e553f7b..1d49afde6 100644
--- a/ui/frame/frame.ios.ts
+++ b/ui/frame/frame.ios.ts
@@ -84,7 +84,7 @@ export class Frame extends frameCommon.Frame {
 
             case enums.NavigationBarVisibility.auto:
                 var pageInstance: pages.Page = page || this.currentPage;
-                newValue = this.backStack.length > 0 || (pageInstance && pageInstance.actionBar.shouldShow());
+                newValue = this.backStack.length > 0 || (pageInstance && pageInstance.actionBar._shouldShow());
                 newValue = !!newValue; // Make sure it is boolean
                 break;
         }