title: How does Visual Studios calculate the Maintainability Index?
body: <p>I have been browsing through the posts and the MSDN, but I am not seeing how the Maintainability Index is created. Only what the good and bad values are. </p>
  
  <p><a href="http://msdn.microsoft.com/en-us/library/bb385914.aspx" rel="noreferrer">http://msdn.microsoft.com/en-us/library/bb385914.aspx</a></p>
  
  <p>Does anyone know? Can we get a reference or explination as to what they are using?</p>
  
  <p>I am interested in what is defined as easy to maintain code. 
  Also more detail on the other metrics would be welcome, but as extra credit. The explination for the other metrics is much more understandable.  </p>