Update 3 5 control boundary

3-5-control-boundary.md

@@ -13,7 +13,7 @@ The **Area Pane** shows the whole map, by default. You can control the regional
 
 *  You can enlarge or reduce the map area by clicking the **-** or **+** icons at the bottom of the **Area Pane**. 
 
-*  You can move the map area by clicking the **<**, **>**, **^**, **v** icons.
+*  You can move the map area by clicking the *Left* (**<**), *Right* (**>**), *Up* (**^**), *Down* (**v**) icons.
 
 You can also scroll or drag your mouse to zoom in/out or move the map area.