[http://understandingnewmedia.com/f2014/lee/Exercise_4/ whileloop]
 
[http://understandingnewmedia.com/f2014/lee/Exercise_4/ whileloop]
 
[http://understandingnewmedia.com/f2014/lee/exercise_4a/loop1/web-export/]
 
[http://understandingnewmedia.com/f2014/lee/exercise_4a/loop1/web-export/]