title: Where is WindowsSDK_IncludePath defined?
body: <p>The macro $(WindowsSDK_IncludePath) has the values shown in the picture.</p>
  
  <p>I'd like to know where those values are defined, they must be defined in some files.</p>
  
  <p>The picture was taken from Visual Studio 2013.</p>
  
  <p><a href="https://i.stack.imgur.com/bOR0G.png" rel="noreferrer"><img src="https://i.stack.imgur.com/bOR0G.png" alt="enter image description here"></a></p>