Numpy's documentation uses several custom extensions to Sphinx. The following extensions are available: * numpydoc: support for the Numpy docstring format in Sphinx, and add the code description directives np:function, np-c:function, etc. that support the Numpy docstring syntax. * numpydoc.traitsdoc: For gathering documentation about Traits attributes. * numpydoc.plot_directive: Adaptation of Matplotlib's plot:: directive. Note that this implementation may still undergo severe changes or eventually be deprecated.