Fixup abc.ABC wording and add versionadded.
diff --git a/Doc/library/abc.rst b/Doc/library/abc.rst
index 75eaa30..27abb60 100644
--- a/Doc/library/abc.rst
+++ b/Doc/library/abc.rst
@@ -129,13 +129,16 @@
.. class:: ABC
- A helper class that has :class:`ABCMeta` as metaclass. :class:`ABC` is the
- standard class to inherit from in order to create an abstract base class,
+ A helper class that has :class:`ABCMeta` as its metaclass. With this class,
+ an abstract base class can be created by simply deriving from :class:`ABC`,
avoiding sometimes confusing metaclass usage.
- Note that :class:`ABC` type is still :class:`ABCMeta`, therefore inheriting
- from :class:`ABC` requires usual precautions regarding metaclasses usage
- as multiple inheritance may lead to metaclass conflicts.
+ Note that the type of :class:`ABC` is still :class:`ABCMeta`, therefore
+ inheriting from :class:`ABC` requires the usual precautions regarding metaclass
+ usage, as multiple inheritance may lead to metaclass conflicts.
+
+ .. versionadded:: 3.4
+
The :mod:`abc` module also provides the following decorators: