title: Solution file vs. Project file in Visual Studio
body: <p>Can someone briefly explain to me the difference between Visual Studio's solution file (.sln) and project file (.vcproj).</p>
  
  <p>It seems to me opening either one open the correct solution/project in Visual Studio.  Is one the super-set of the other?</p>
  
  <p>Note: I am currently using Visual Studio 2008 working on a project that was brought forward from Visual Studio 2005 (I believe).</p>