title: What is the meaning of $(SolutionDir)\..\..\..\
body: <p>In the property sheet: for one User Macros, the name is OSGVE_DIR, with Value: $(SolutionDir)\..\..\..\..</p>
  
  <p>What is the path of $(SolutionDir) ？ \..\..\..\.. the slashes means change to the sub directory or up directory?</p>