Document which part of the random module module are guaranteed.
diff --git a/Doc/library/random.rst b/Doc/library/random.rst
index 6ef5d20..270518c 100644
--- a/Doc/library/random.rst
+++ b/Doc/library/random.rst
@@ -51,18 +51,23 @@
Bookkeeping functions:
-.. function:: seed([x])
+.. function:: seed([x], version=2)
- Initialize the basic random number generator. Optional argument *x* can be any
- :term:`hashable` object. If *x* is omitted or ``None``, current system time is used;
- current system time is also used to initialize the generator when the module is
- first imported. If randomness sources are provided by the operating system,
- they are used instead of the system time (see the :func:`os.urandom` function
- for details on availability).
+ Initialize the random number generator.
- If *x* is not ``None`` or an int, ``hash(x)`` is used instead. If *x* is an
- int, *x* is used directly.
+ If *x* is omitted or ``None``, the current system time is used. If
+ randomness sources are provided by the operating system, they are used
+ instead of the system time (see the :func:`os.urandom` function for details
+ on availability).
+ If *x* is an int, it is used directly.
+
+ With version 2 (the default), a :class:`str`, :class:`bytes`, or :class:`bytearray`
+ object gets converted to a :class:`int` and all of its bits are used. With version 1,
+ the :func:`hash` of *x* is used instead.
+
+ .. versionchanged:: 3.2
+ Moved to the version 2 scheme which uses all of the bits in a string seed.
.. function:: getstate()