Issue #18758: Fixed and improved cross-references.

Doc/library/abc.rst

@@ -110,19 +110,19 @@ This module provides the following class:
       MyIterable.register(Foo)
 
    The ABC ``MyIterable`` defines the standard iterable method,
-   :meth:`__iter__`, as an abstract method.  The implementation given here can
-   still be called from subclasses.  The :meth:`get_iterator` method is also
-   part of the ``MyIterable`` abstract base class, but it does not have to be
-   overridden in non-abstract derived classes.
+   :meth:`~iterator.__iter__`, as an abstract method.  The implementation given
+   here can still be called from subclasses.  The :meth:`get_iterator` method
+   is also part of the ``MyIterable`` abstract base class, but it does not have
+   to be overridden in non-abstract derived classes.
 
    The :meth:`__subclasshook__` class method defined here says that any class
-   that has an :meth:`__iter__` method in its :attr:`__dict__` (or in that of
-   one of its base classes, accessed via the :attr:`__mro__` list) is
-   considered a ``MyIterable`` too.
+   that has an :meth:`~iterator.__iter__` method in its
+   :attr:`~object.__dict__` (or in that of one of its base classes, accessed
+   via the :attr:`~class.__mro__` list) is considered a ``MyIterable`` too.
 
    Finally, the last line makes ``Foo`` a virtual subclass of ``MyIterable``,
-   even though it does not define an :meth:`__iter__` method (it uses the
-   old-style iterable protocol, defined in terms of :meth:`__len__` and
+   even though it does not define an :meth:`~iterator.__iter__` method (it uses
+   the old-style iterable protocol, defined in terms of :meth:`__len__` and
    :meth:`__getitem__`).  Note that this will not make ``get_iterator``
    available as a method of ``Foo``, so it is provided separately.