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docs: Document cross-referencing between documentation pages

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The syntax to cross-reference between documentation pages wasn't
documented anywhere.

Document the cross-referencing using the new automarkup for
Documentation/... and also Sphinx's doc directive for using relative
paths.

Signed-off-by: Nícolas F. R. A. Prado <nfraprado@protonmail.com>
Link: https://lore.kernel.org/r/20200911133339.327721-4-nfraprado@protonmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Nícolas F. R. A. Prado 2020-09-11 13:34:46 +00:00 committed by Jonathan Corbet
parent d18b01789a
commit c170f2eb96
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Documentation/doc-guide/sphinx.rst
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@ -337,6 +337,23 @@ Rendered as:
- column 3
Cross-referencing
-----------------
Cross-referencing from one documentation page to another can be done by passing
the path to the file starting from the Documentation folder.
For example, to cross-reference to this page (the .rst extension is optional)::
See Documentation/doc-guide/sphinx.rst.
If you want to use a relative path, you need to use Sphinx's ``doc`` directive.
For example, referencing this page from the same directory would be done as::
See :doc:`sphinx`.
For information on cross-referencing to kernel-doc functions or types, see
Documentation/doc-guide/kernel-doc.rst.
.. _sphinx_kfigure:
Figures & Images