1. Start ParaView (see <link> for information on how to launch ParaView)

2. Create a sphere source by selecting SphereSource from VTK -> Sources
   menu. 

   <insert creating.jpg>

3. Set the theta resolution (in Parameters window) of the sphere  
   to 16 and click Accept.

   <insert changeres.jpg>

4. Create a shrink filter by selecting ShrinkFilter from VTK -> Filters
   menu.

   <insert shrink.jpg>

5. Set the shrink factor (in Parameters window) to 0.8 and click Accept.

   <insert result.jpg>

6. Select Sphere1 from the Navigation window, in the  Parameters windows,
   set set the starting phi angle to 30 and click Accept.

   <insert changeangle.jpg>

7. Rotate the camera around the sphere by clicking the left mouse button
   near the center of the sphere and dragging the mouse to observe the
   effect of change the starting phi angle.

8. Select Shrink1 from the Select menu.

   <insert navigate.jpg>

9. Select the Display tab from the source notebook and change the variable
   to be colored by to "Point Normals 0".

   <insert addcolor.jpg>

10. Select View from Properties menu.

    <insert view.jpg>

11. Select the General tab from the view notebook and click on the "Set Color"
    button. Change the color of the background using the color dialog.

    <insert background.jpg>

12. To hide the properties menu, choose "Hide Properties" from the Properties
    menu. You can un-hide the properties menu back by choosing one of
    Source, Animation or View from the Properties menu.

    <insert final.jpg>