Add reference to docutils AST
@@ -271,10 +271,13 @@ both can read notebooks in ``.ipynb`` and additional formats supported by `jupyt
and are configured in a similar way.
However, there are some differences between them:
-- nsphinx uses `pandoc <https://pandoc.org/>`_ to convert the Markdown from Jupyter notebooks
- to reStructuredText and then to docutils AST,
- whereas MyST-NB uses `MyST-Parser`_ to directly convert the Markdown text to docutils AST.
- Both Markdown flavors are mostly equal, but they have some differences.
+- nsphinx uses `pandoc <https://pandoc.org/>`_
+ to convert the Markdown from Jupyter notebooks to reStructuredText
+ and then to `docutils AST <https://docutils.sourceforge.io/docs/ref/doctree.html>`_,
+ whereas MyST-NB uses `MyST-Parser`_
+ to directly convert the Markdown text to docutils AST.
+ Both Markdown flavors are mostly equal,
+ but they have some differences.
- nbsphinx executes each notebook during the parsing phase,
whereas MyST-NB can execute all notebooks up front
and cache them with `jupyter-cache <https://jupyter-cache.readthedocs.io/>`_.
