bpo-35054: Add more index entries for symbols. (GH-10064)

Doc/tutorial/controlflow.rst

@@ -526,7 +526,7 @@ Arbitrary Argument Lists
 ------------------------
 
 .. index::
-  statement: *
+   single: *; in function calls
 
 Finally, the least frequently used option is to specify that a function can be
 called with an arbitrary number of arguments.  These arguments will be wrapped
@@ -570,7 +570,7 @@ or tuple::
    [3, 4, 5]
 
 .. index::
-  statement: **
+   single: **; in function calls
 
 In the same fashion, dictionaries can deliver keyword arguments with the ``**``\
 -operator::
@@ -675,7 +675,8 @@ Function Annotations
 .. sectionauthor:: Zachary Ware <zachary.ware@gmail.com>
 .. index::
    pair: function; annotations
-   single: -> (return annotation assignment)
+   single: ->; function annotations
+   single: :; function annotations
 
 :ref:`Function annotations <function>` are completely optional metadata
 information about the types used by user-defined functions (see :pep:`3107` and

Doc/tutorial/introduction.rst

@@ -11,6 +11,8 @@ with a prompt are output from the interpreter. Note that a secondary prompt on a
 line by itself in an example means you must type a blank line; this is used to
 end a multi-line command.
 
+.. index:: single: #; comment
+
 Many of the examples in this manual, even those entered at the interactive
 prompt, include comments.  Comments in Python start with the hash character,
 ``#``, and extend to the end of the physical line.  A comment may appear at the