Update 3 3 open layer

3-3-open-layer.md

@@ -7,10 +7,8 @@ After opening data files, you can add layers to the 3D-image in the **Rendering
 
 1.  In **Menu Bar**, choose *Layer* menu category.
 1.  In *Add Layer* panel, click the corresponding button with the layer that you want to add.
-
 <p align="center">
-    ![](img/3-3-1-add-layer.png)
-
+![](img/3-3-1-add-layer.png)
 1.  In *Edit [Layer Name] Layer* dialog box, such as *Edit Horizontal Plane Layer*, select the variable you want to show in *Select Variable* panel, set the vertical altitude and map area of the layer in *Area and level to Display* panel and other options, and click *OK* button.
 
 <p align="center">
@@ -92,7 +90,7 @@ When multiple layers are overlapped, the layer with the larger distance from the
 
 The alternative way is to choose *Layer* menu category in **Menu Bar**. In *Layer Profile* panel, click the *Automatic Z-Order* button.
 
-##### Saving/Opening layers
+##### Saving/Opening layer profile
 
 *  You can save the layer list in the current 3-D image in **Rendering Pane** into a layer profile file by clicking *Save* button on the control bar.