Update 3 3 open layer

3-3-open-layer.md

@@ -9,7 +9,7 @@ After opening data files, you can add layers to the 3D-image in the **Rendering
 
     ![](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* and set the vertical altitude and map area of the layer in *Area and level to Display*, and click *OK* button.
+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.
 
 
     ![](img/3-3-1-edit-layer.png)
@@ -42,7 +42,50 @@ To display data of another variable on the current layer, you can *select* that
 
 ### 2. Layers Management
 
-After adding a layer, the 
+**Layers Pane** displays the list of layers according to the adding order and shows layer information such as layer properties, style and layer grid. 
+
+![](img/3-3-2-layers-pane.png)
+
+Each layer item in the list consists of *Show/Hide* checkbox, *Layer Name*, *Lock Time* and *Close* buttons.
+
+The *Layer Name* is created in the following format: %VARIABLE NAME% : %SECTION TYPE% - %VERTICAL SYSTEM%
+
+
+
+##### Showing/Hiding layers
+
+*  You can show or hide a layer on the **Rendering Pane** by checking or unchecking the *Show/Hide* checkbox .
+
+      ![](img/3-3-2-show-hide.png)
+
+*  You can show all layers or hide all layers in the list by clicking *Show All* or *Hide All* button on the control bar.
+
+      ![](img/3-3-2-show-hide-all.png)
+
+      You can also show or hide the layers by choosing *Layer* category in *Menu Categories*. In *View* panel, click the *Show* button.
+
+##### Closing layers
+
+*  You can close each layer in the list by click the *Close* button.
+
+      ![](img/3-3-2-close.png)
+
+*  You can close all layers by clicking *Close All* button on the control bar.
+
+      ![](img/3-3-2-close-all.png)
+
+      You can also show or hide the layers by choosing *Layer* category in *Menu Categories*. In *View* panel, click the *Close* button.
+
+
+##### Saving/Opening layers
+
+*  You can save 
+
+
+*  You can open the saved 
+
+
+##### Right-click
 
 
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