title: issue of virtual method in C#
body: <p>In MSDN, it is mentioned,</p>
  
  <p><a href="http://msdn.microsoft.com/en-us/library/9fkccyh4(VS.80).aspx" rel="nofollow noreferrer">http://msdn.microsoft.com/en-us/library/9fkccyh4(VS.80).aspx</a></p>
  
  <p>I am confused what does this item mean "A virtual inherited property can be overridden in a derived class by including a property declaration that uses the override modifier."?</p>
  
  <p>(this is the 2nd differences between virtual and abstract)</p>
  
  <p>thanks in advance,
  George</p>