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    "# Notebook Figure Directive\n",
    "\n",
    "This is a ``.ipynb`` file with ``figure`` directive.\n",
    "The example thumbnail is selected with ``figure`` directive ``alt`` option\n",
    "being set to ``gallery_thumbnail``.\n",
    "\n",
    "\n",
    "## without ``alt`` text\n",
    "\n",
    "````{code-block} markdown\n",
    "```{figure} /_static/rgb.png\n",
    "   :align: center\n",
    "   :width: 60%\n",
    "\n",
    "This is the caption of the figure (a simple paragraph).\n",
    "```\n",
    "````\n",
    "\n",
    "```{figure} /_static/rgb.png\n",
    "   :align: center\n",
    "   :width: 60%\n",
    "\n",
    "This is the caption of the figure (a simple paragraph).\n",
    "```\n",
    "\n",
    "## ``alt`` set to ``gallery_thumbnail``\n",
    "\n",
    "````{code-block} markdown\n",
    ":emphasize-lines: 3\n",
    "```{figure} /_static/barchart.png\n",
    "   :align: center\n",
    "   :alt: gallery_thumbnail\n",
    "   :width: 60%\n",
    "\n",
    "This is the caption of the figure (a simple paragraph).\n",
    "```\n",
    "````\n",
    "\n",
    "```{figure} /_static/barchart.png\n",
    "   :align: center\n",
    "   :alt: gallery_thumbnail\n",
    "   :width: 60%\n",
    "\n",
    "This is the caption of the figure (a simple paragraph).\n",
    "```\n",
    "\n",
    "## ``alt`` set to a random text\n",
    "\n",
    "````{code-block} markdown\n",
    ":emphasize-lines: 3\n",
    "```{figure} /_static/bar_colors.png\n",
    "   :align: center\n",
    "   :alt: a random text\n",
    "   :width: 60%\n",
    "\n",
    "This is the caption of the figure (a simple paragraph).\n",
    "```\n",
    "````\n",
    "\n",
    "```{figure} /_static/bar_colors.png\n",
    "   :align: center\n",
    "   :alt: a random text\n",
    "   :width: 60%\n",
    "\n",
    "This is the caption of the figure (a simple paragraph).\n",
    "```\n"
   ]
  }
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