http://bugs.python.org/review/23484/diff/14347/Doc/library/multiprocessing.r... File Doc/library/multiprocessing.rst (right): http://bugs.python.org/review/23484/diff/14347/Doc/library/multiprocessing.r... Doc/library/multiprocessing.rst:1199: .. versionchanged:: 2.7 If the timeout parameter was added in 2.7 and 3.0, we can remove this directive on 3.4 and default branches since it's there for the beginning of Python 3. On the other hand, for example, if it was added in 2.7 and 3.2, we should change it to .. versionchanged:: 3.2 in Python 3 documentation. http://bugs.python.org/review/23484/