Update 3 6 action history

3-6-action-history.md

@@ -5,10 +5,14 @@
 The **Actions Pane** displays the history of actions related to the current selected layer.
 If the selected layer is a default layer (background map layer, borderline layer), the **Actions Pane** shows the whole edit history of the **Rendering Pane**. For other types of grid layers, it only shows the edit history of the selected layer.
 
-You can select an action item in the action list and 
+You can select an action entry in the action list and 
 
-*  Click the *Undo* button or click the *Up* icon to undo the history entry to the former action item. 
-*  Click the *Redo* button or click the *Down* icon to redo the history entry to the later action item. 
+*  Click the *Undo* button or click the *Up* icon to undo the history entry to the former action entry. 
+*  Click the *Redo* button or click the *Down* icon to redo the history entry to the later action entry. 
+   
+      ![](img/3--6-actions-pane.png)
+
+You can also select an action entry and right-click to select *Undo* or *Redo* options.
 
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