Issue #19795: Mark up None as literal text.
diff --git a/Doc/library/multiprocessing.rst b/Doc/library/multiprocessing.rst
index e33f85f..b393ad1 100644
--- a/Doc/library/multiprocessing.rst
+++ b/Doc/library/multiprocessing.rst
@@ -1800,7 +1800,7 @@
.. versionadded:: 2.7
*maxtasksperchild* is the number of tasks a worker process can complete
before it will exit and be replaced with a fresh worker process, to enable
- unused resources to be freed. The default *maxtasksperchild* is None, which
+ unused resources to be freed. The default *maxtasksperchild* is ``None``, which
means worker processes will live as long as the pool.
.. note::
@@ -2017,7 +2017,7 @@
``None`` then digest authentication is used.
If *authkey* is a string then it will be used as the authentication key;
- otherwise it must be *None*.
+ otherwise it must be ``None``.
If *authkey* is ``None`` and *authenticate* is ``True`` then
``current_process().authkey`` is used as the authentication key. If