title: How to implement something like "Fences"
body: <p>I am fascinated by the program "Fences"</p>
  
  <p>How can I implement something which resides on the desktop like it does?
  you can move around the fences and they are persistent.</p>
  
  <p><a href="http://i.i.com.com/cnwk.1d/i/tim//2009/10/05/Foreman_11108546_4825_fences_210x158.jpg" rel="nofollow noreferrer">image i.i.com.com/cnwk.1d/i/tim//2009/10/05/Foreman_11108546_4825_fences_210x158.jpg http://i.i.com.com/cnwk.1d/i/tim//2009/10/05/Foreman_11108546_4825_fences_210x158.jpg</a></p>
  
  <p>My guess is that it has been implemented using a dot net language. Can this be done in C# ?</p>