4-2-vertical-scalar-field.md

@@ -41,6 +41,9 @@ You can control the size and location of the plane by using _Rendering Pane_ onl
   2. double-click one of the corners of the plane, to reveal the control handles,
   3. drag the control handles to change the size and location of the plane. 
 
+You can also change latitude/longitude of the plane, by dragging control handles in the _Area Pane_.
+
+
 ![](img/4-2-1-control-handles.png)
 
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