# HG changeset patch
# User Sebastien Jodogne <s.jodogne@gmail.com>
# Date 1596567215 -7200
# Node ID 03dfb896ca4b023cf977adad5eb11911e6fd1c34
# Parent  a735476a0e6e2fb4e832ddbcc4f98ea9a8fa19ce# Parent  90e6c20cef1e4dae9345a0b848714a8ecdce5429
merge

diff -r 90e6c20cef1e -r 03dfb896ca4b Sphinx/source/plugins/python.rst
--- a/Sphinx/source/plugins/python.rst	Tue Aug 04 16:53:18 2020 +0200
+++ b/Sphinx/source/plugins/python.rst	Tue Aug 04 20:53:35 2020 +0200
@@ -645,6 +645,11 @@
 Performance and concurrency
 ---------------------------
 
+**Important:** This section only applies to UNIX-like systems. The
+``multiprocessing`` package will not work on Microsoft Windows as the
+latter OS has a different model for `forking processes
+<https://en.wikipedia.org/wiki/Fork_(system_call)>`__.
+
 .. highlight:: python
 
 Let us consider the following sample Python script that makes a