title: what does "CLR20r3" stand for? (what version of the clr is it)
body: <p>the obvious choice would be "CLR version 2.0 revision 3" but unfortunatly there is no such a thing.  The closest I can come to a definitive list is <a href="http://en.wikipedia.org/wiki/List_of_.NET_Framework_versions" rel="noreferrer">wikipedia</a>, but that uses major/minor numbering systems.</p>
  
  <p>The reason this came up, is because I had a customer trying to run my .net4 app, but it kept crashing with clr20r3 MissingMethodException on XmlReader.Dispose()  turns out the .net4 install failed on their computer so it didn't have the .net 4 system.xml.dll.</p>
  
  <p>But when troubleshooting this, I was trying to find out what clr20r3 meant (IIRC, .net 3 used the CLR2 also).  </p>
  
  <p>anyone got a lead for figuring this out?  searching google comes up with a lot of people troubleshooting application crashes, but no info on what version of the CLR it really is.</p>
  
  <p>thanks</p>