Issue #15064: Make BaseManager.__enter__() start server if necessary.
diff --git a/Doc/library/multiprocessing.rst b/Doc/library/multiprocessing.rst
index 2f64bb1..8858859 100644
--- a/Doc/library/multiprocessing.rst
+++ b/Doc/library/multiprocessing.rst
@@ -1281,9 +1281,14 @@
The address used by the manager.
- Manager objects support the context manager protocol -- see
- :ref:`typecontextmanager`. :meth:`__enter__` returns the
- manager object, and :meth:`__exit__` calls :meth:`shutdown`.
+ .. versionchanged:: 3.3
+ Manager objects support the context manager protocol -- see
+ :ref:`typecontextmanager`. :meth:`__enter__` starts the server
+ process (if it has not already started) and then returns the
+ manager object. :meth:`__exit__` calls :meth:`shutdown`.
+
+ In previous versions :meth:`__enter__` did not start the
+ manager's server process if it was not already started.
.. class:: SyncManager