anchor.diff:  exit /b 1
   
   rem  ------------------------------------------------------------------------
  +
  +:clean
  +
  +rem  Delete all the unpacked files
  +
  +call :deleteFile %GdalAdmin_InstallDir%\README.txt
  +call :deleteDir  %GdalAdmin_InstallDir%\managed
  +call :deleteDir  %GdalAdmin_InstallDir%\native
  +
  +goto :eof
  +
  +rem  ------------------------------------------------------------------------
  +
  +:deleteFile
  +
  +if exist "%~1" (
  +  del "%~1"
  +  echo Deleted %~1
  +)
  +goto :eof
  +
  +rem  ------------------------------------------------------------------------
  +
  +:deleteDir
  +
  +if exist "%~1" (
  +  rmdir /s /q "%~1"
  +  echo Deleted %~1\
  +)
  +goto :eof
  +
  +rem  ------------------------------------------------------------------------
  
positive.code: echo   get       -- download and unpack GDAL libraries and C# bindings
  echo   update    -- update the local list of available GDAL packages with the
  echo                current list in the svn repos, then do the "get" action
  echo   help      -- display this message (default)
  
  goto :eof
  
negative.code: set Script=%~nx0
  call :processArgs %*
  if "%Action%" == "error" goto :exitScript
  if "%Action%" == "clean" (
    call :clean
    goto :exitScript
  )
  if "%Action%" == "help" (
    call :usage
    goto :exitScript
  