Footnotes with rST
------------------

[#c]_

.. note::

    [#d]_

[#a]_

.. [#a] some footnote *text*

.. [#b] a footnote before its reference

[#b]_

.. [#c] a footnote referenced first

.. [#d] a footnote referenced in a directive

[#123]_ [#123]_

.. [#123] multiple references footnote

.. [#x] an unreferenced footnote