Clean-up the description of the range object.
diff --git a/Doc/library/stdtypes.rst b/Doc/library/stdtypes.rst
index f960bab..30e55b1 100644
--- a/Doc/library/stdtypes.rst
+++ b/Doc/library/stdtypes.rst
@@ -1581,16 +1581,14 @@
The :class:`range` type is an immutable sequence which is commonly used for
looping. The advantage of the :class:`range` type is that an :class:`range`
object will always take the same amount of memory, no matter the size of the
-range it represents. There are no consistent performance advantages.
+range it represents.
-Range objects have relatively little behavior: they support indexing,
-iteration, the :func:`len` function, and the following methods.
+Range objects have relatively little behavior: they support indexing, contains,
+iteration, the :func:`len` function, and the following methods:
.. method:: range.count(x)
- Return the number of *i*'s for which ``s[i] == x``. Normally the
- result will be 0 or 1, but it could be greater if *x* defines an
- unusual equality function.
+ Return the number of *i*'s for which ``s[i] == x``.
.. versionadded:: 3.2