title: Curious to mscorlib reference
body: <p>I am curious as to the <code>mscorlib</code> reference in different project templates.</p>
  
  <p>When I create a WPF project, I cannot find the <code>mscorlib</code> file in the reference folder. I think it is referenced by default.</p>
  
  <p>When I create a Silverlight project, I can find it in the folder. It links to the Silverlight framework. Then I tried to delete it and of course it cannot be compiled. Then I tried to re-add this assembly to the reference again; it cannot be added and cannot be compiled anymore. It's weird. </p>
  
  <p>When I create a MonoDroid project, I can still find the <code>mscorlib</code> reference. But after I deleted this reference, the project still can be compiled; but I'm not sure if it runs fine.</p>
  
  <p>Does anyone knows what causes this behavior?</p>
  
  <p>Thanks,
  Howard</p>