diff --git a/angularjs/Autocomplete/textbox-customization.md b/angularjs/Autocomplete/textbox-customization.md
index ac58ee61..55a8d4fa 100644
--- a/angularjs/Autocomplete/textbox-customization.md
+++ b/angularjs/Autocomplete/textbox-customization.md
@@ -7,7 +7,7 @@ control: Autocomplete
 documentation: ug
 ---
 
-## Textbox Customization
+# Textbox Customization
 
 ### Auto-fill support
 
diff --git a/angularjs/Rotator/thumbnail.md b/angularjs/Rotator/thumbnail.md
index b8367e13..11218d54 100644
--- a/angularjs/Rotator/thumbnail.md
+++ b/angularjs/Rotator/thumbnail.md
@@ -7,7 +7,7 @@ control: rotator
 documentation: ug
 ---
 
-## Thumbnail
+# Thumbnail
 
 This feature implements Thumbnail in Rotator control. You can view or access any of the Rotator items instantly. All the images are given as Thumb Element to use this feature.
 
@@ -44,5 +44,5 @@ You can refer the following code example of Thumbnail in Rotator.
 
 
 
-![](thumbnail_images\previewthumbnail_img1.png)
+![thumbnail in rotator component.](thumbnail_images\previewthumbnail_img1.png)
 
diff --git a/angularjs/SunburstChart/Tooltip.md b/angularjs/SunburstChart/Tooltip.md
index 570d470d..06e8a9a0 100644
--- a/angularjs/SunburstChart/Tooltip.md
+++ b/angularjs/SunburstChart/Tooltip.md
@@ -7,7 +7,7 @@ control: Sunburst Chart
 documentation: ug
 ---
 
-## Tooltip  
+# Tooltip  
 
 ToolTip allows you to display any information over a sunburst segment. It appears when mouse hovered over or touch any chart segment. By default, it displays the corresponding segment category name and its value
 
@@ -18,7 +18,7 @@ ToolTip allows you to display any information over a sunburst segment. It appear
 
 {% endhighlight %}
 
-![](Tooltip_images/Tooltip_img1.png)
+![mouse hovered over or touch any chart segment.](Tooltip_images/Tooltip_img1.png)
 
 ## Tooltip Template   
 
@@ -45,7 +45,7 @@ You can add a <div> element to set the `background` for the Sunburst chart and a
 
 {% endhighlight %}
 
-![](Tooltip_images/Tooltip_img2.png)
+![to display the x and y values of the corresponding point.](Tooltip_images/Tooltip_img2.png)
 
 ## Customize the appearance of tooltip