docs: offScreenTabLimit description

Author: NickIliev

app/ns-ui-widgets-category/tabs/properties/article.md

@@ -9,6 +9,16 @@
 
 - `offscreenTabLimit: number;` - Gets or sets the number of offscreen preloaded tabs of the Tabs.
 
+    Example:
+
+    - Let's assume that the TabContentItem[1] is selected (`selectedIndex = 1`) and `offscreenTabLimit` is set to 1.
+
+        **Result:** The content for TabContentItem[0] and TabContentItem[2] will be pre-loaded.
+
+    - Select TabContentItem[2] (`selectedIndex = 2`).
+
+        **Result:** TabContentItem[0] will be unloaded and TabContentItem[3] will be pre-loaded.
+
 - `tabsPosition: "top" | "bottom";` - Gets or sets the position state of the Tabs.
 
 - `android: any` /* android.view.View */; - Gets the native [android widget](http://developer.android.com/reference/android/support/v4/view/ViewPager.html) that represents the user interface for this component. Valid only when running on Android OS.

app/ns-ui-widgets-category/tabs/properties/properties-page.js

@@ -28,8 +28,12 @@ exports.onTabsLoaded = (args) => {
     */
     tabs.selectedIndex = 1;
     tabs.swipeEnabled = true;
+
+    /*
+        offscreenTabLimit:  Sets the number of TabContentItem to be preloaded.
+    */
     tabs.offscreenTabLimit = 1;
-    tabs.tabsPosition = "top";
+    tabs.tabsPosition = "top"; //  Suppported values: 'top' or 'bottom'
 
     /*
         Using the nativeView property (correspnding to tabs.ios or tabs.android depending on the used platform)