anchor.diff:  
     if EXIST install (
       rmdir /s /q install
  +    sleep 2
     )
     if EXIST install (
       rmdir install
  +    sleep 2
     )
   
   )
  
positive.code: 
    if EXIST obj (
      rmdir /s /q obj
    )
    if EXIST obj (
      rmdir obj
    )
  )
  
  
negative.code: 
    if EXIST "%PACKAGE_SUB_DIR%" (
      rmdir /s /q %PACKAGE_SUB_DIR%
      sleep 2
    )
  
    if EXIST "%PACKAGE_SUB_DIR%" (
      rmdir %PACKAGE_SUB_DIR%
      sleep 2
    )
  
    tar xvf %PACKAGE_NAME1%
  