anchor.diff:  SET DIR=%~dp0
   
   SET XENIA_SLN=xenia.sln
  +
  +SET VS14_VCVARSALL="C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat"
  +SET VS15_VCVARSALL="C:\Program Files (x86)\Microsoft Visual Studio 15.0\VC\vcvarsall.bat"
   
   REM ============================================================================
   REM Environment Validation
  
positive.code: )
  ECHO.
  ECHO ^> devenv %XENIA_SLN% %DEVENV_COMMAND% %CONFIG%
  devenv %XENIA_SLN% /nologo %DEVENV_COMMAND% %CONFIG%
  
  IF %ERRORLEVEL% NEQ 0 (
    ECHO.
  
negative.code: :check_msvc
  SETLOCAL EnableDelayedExpansion
  1>NUL 2>NUL CMD /c where devenv
  IF %ERRORLEVEL% NEQ 0 (
    IF EXIST %VS15_VCVARSALL% (
      REM VS2015
  