anchor.diff:  
   REM ----------------------------------------------------------------------------
   :install
  -
  -START /B /wait msiexec /QB /i %2 /L*vx %2-install.log /norestart
  +START /B /wait msiexec /i %2 TARGETDIR=%SystemDrive%\%1%OS% /L*vx %1-install.log /norestart /QB
   EXIT /B
   
   REM ----------------------------------------------------------------------------
   :end
  -
  -ENDLOCAL
   PAUSE
  -EXIT /B
  +EXIT /B 0
  
positive.code: SET TESTSDIR=%CWD%/..
  
  REM ----------------------------------------------------------------------------
  ECHO [INFO] Installing 7-Zip
  SET SEVENZIP_FILENAME=7z1604
  
  
negative.code: 
  REM ----------------------------------------------------------------------------
  :download
  if not exist %3 (
    ECHO [INFO] Downloading %1
    bitsadmin /transfer "Downloading %1" "%2" "%3"
  