anchor.diff:  
   REM Command file for Sphinx documentation
   
  +if "%SPHINXAPIDOC%" == "" (
  +	set SPHINXAPIDOC=sphinx-apidoc
  +)
   if "%SPHINXBUILD%" == "" (
   	set SPHINXBUILD=sphinx-build
   )
  +
   set BUILDDIR=_build
   set ALLSPHINXOPTS=-d %BUILDDIR%/doctrees %SPHINXOPTS% .
   set I18NSPHINXOPTS=%SPHINXOPTS% .
  
positive.code: 	echo.http://sphinx-doc.org/
  	exit /b 1
  )
  
  if "%1" == "html" (
  	%SPHINXBUILD% -b html %ALLSPHINXOPTS% %BUILDDIR%/html
  
negative.code: )
  
  
  %SPHINXAPIDOC% 2> nul
  if errorlevel 9009 (
  	echo.
  	echo.The 'sphinx-apidoc' command was not found. Make sure you have Sphinx
  	echo.installed, then set the SPHINXAPIDOC environment variable to point
  	echo.to the full path of the 'sphinx-apidoc' executable. Alternatively you
  	echo.may add the Sphinx directory to PATH.
  	echo.
  	echo.If you don't have Sphinx installed, grab it from
  	echo.http://sphinx-doc.org/
  	exit /b 1
  )
  
  %SPHINXBUILD% 2> nul
  if errorlevel 9009 (
  	echo.
  