+.. class:: DirectoryHTMLBuilder
+ This is a subclass of the standard HTML builder. Its output is a directory
+ with HTML files, where each file is called ``index.html`` and placed in a
+ subdirectory named like its page name. For example, the document
+ ``markup/rest.rst`` will not result in an output file ``markup/rest.html``,
+ but ``markup/rest/index.html``. When generating links between pages, the
+ ``index.html`` is omitted, so that the URL would look like ``markup/rest/``.
+ Its name is ``dirhtml``.
.. class:: HTMLHelpBuilder
This builder produces the same output as the standalone HTML builder, but