Merge in all documentation changes since branching 3.4.0rc1.

Doc/tutorial/introduction.rst

@@ -371,9 +371,9 @@ values.  The most versatile is the *list*, which can be written as a list of
 comma-separated values (items) between square brackets.  Lists might contain
 items of different types, but usually the items all have the same type. ::
 
-   >>> squares = [1, 2, 4, 9, 16, 25]
+   >>> squares = [1, 4, 9, 16, 25]
    >>> squares
-   [1, 2, 4, 9, 16, 25]
+   [1, 4, 9, 16, 25]
 
 Like strings (and all other built-in :term:`sequence` type), lists can be
 indexed and sliced::
@@ -389,12 +389,12 @@ All slice operations return a new list containing the requested elements.  This
 means that the following slice returns a new (shallow) copy of the list::
 
    >>> squares[:]
-   [1, 2, 4, 9, 16, 25]
+   [1, 4, 9, 16, 25]
 
 Lists also supports operations like concatenation::
 
    >>> squares + [36, 49, 64, 81, 100]
-   [1, 2, 4, 9, 16, 25, 36, 49, 64, 81, 100]
+   [1, 4, 9, 16, 25, 36, 49, 64, 81, 100]
 
 Unlike strings, which are :term:`immutable`, lists are a :term:`mutable`
 type, i.e. it is possible to change their content::

Doc/tutorial/whatnow.rst

@@ -21,8 +21,8 @@ the set are:
   and many other tasks. Skimming through the Library Reference will give you an
   idea of what's available.
 
-* :ref:`install-index` explains how to install external modules written by other
-  Python users.
+* :ref:`installing-index` explains how to install additional modules written
+  by other Python users.
 
 * :ref:`reference-index`: A detailed explanation of Python's syntax and
   semantics.  It's heavy reading, but is useful as a complete guide to the