Text [#label]_ with label.

.. [#label] Labeled auto

----------

(Document
  (Paragraph
    'Text '
    NoWrapRegion(content=[HighlightedRegion(content=['[1]'], color='role/footnote')])
    ' with label.')
  (FootnoteContainer
    (Footnote '1'
      (Paragraph
        'Labeled auto'))))
