--- /dev/null
+OpenStack uses reStructuredText to document their REST API.\r
+\r
+\r
+Example:\r
+- https://docs.openstack.org/api-ref/database/?expanded=id30-detail,create-datastore-version-detail\r
+- Source: https://opendev.org/openstack/trove/src/branch/master/api-ref/source\r
+- Source: https://opendev.org/openstack/trove/src/branch/master/api-ref/source/datastore-versions.inc\r
+\r
+They use rST with shared parameter definitions in a ``parameters.yaml`` file, and have custom directives like ``.. rest_method::`` and ``.. rest_parameters::``
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