Improve indexing.

lispref/display.texi

@@ -4621,6 +4621,7 @@ buffer.  If @var{count-current} is non-@code{nil}, count any button at
 @node Abstract Display
 @section Abstract Display
 @cindex ewoc
+@cindex abstract display
 @cindex display, abstract
 @cindex display, arbitrary objects
 @cindex model/view/controller

lispref/frames.texi

@@ -555,6 +555,7 @@ If non-@code{nil}, this frame's window is never split automatically.
 
 @node Management Parameters
 @subsubsection Window Management Parameters
+@cindex window manager, and frame parameters
 
   These frame parameters, meaningful only on window system displays,
 interact with the window manager.

lispref/hash.texi

@@ -7,10 +7,11 @@
 @node Hash Tables, Symbols, Sequences Arrays Vectors, Top
 @chapter Hash Tables
 @cindex hash tables
+@cindex lookup tables
 
-  A hash table is a very fast kind of lookup table, somewhat like
-an alist in that it maps keys to corresponding values.  It differs
-from an alist in these ways:
+  A hash table is a very fast kind of lookup table, somewhat like an
+alist (@pxref{Association Lists}) in that it maps keys to
+corresponding values.  It differs from an alist in these ways:
 
 @itemize @bullet
 @item

lispref/locals.texi

@@ -9,6 +9,7 @@
 @c The title "Standard Buffer-Local Variables" is too long for
 @c smallbook. --rjc 30mar92
 @cindex buffer-local variables, general-purpose
+@cindex standard buffer-local variables
 
   The table below lists the general-purpose Emacs variables that
 automatically become buffer-local in each buffer.  Most become

lispref/maps.texi

@@ -6,6 +6,7 @@
 @setfilename ../info/maps
 @node Standard Keymaps, Standard Hooks, Standard Buffer-Local Variables, Top
 @appendix Standard Keymaps
+@cindex standard keymaps
 
 The following symbols are used as the names for various keymaps.
 Some of these exist when Emacs is first started, others are

lispref/numbers.texi

@@ -480,6 +480,7 @@ depending on your machine.
 
 @node Arithmetic Operations
 @section Arithmetic Operations
+@cindex arithmetic operations
 
   Emacs Lisp provides the traditional four arithmetic operations:
 addition, subtraction, multiplication, and division.  Remainder and modulus
@@ -1039,6 +1040,7 @@ bit is one in the result if, and only if, the @var{n}th bit is zero in
 @section Standard Mathematical Functions
 @cindex transcendental functions
 @cindex mathematical functions
+@cindex floating-point functions
 
   These mathematical functions allow integers as well as floating point
 numbers as arguments.

lispref/positions.texi

@@ -642,6 +642,7 @@ beginning of the first screen line.  @xref{Minibuffer Contents}.
 @cindex sexp motion
 @cindex Lisp expression motion
 @cindex list motion
+@cindex balanced-parenthesis expressions
 
   Here are several functions concerned with balanced-parenthesis
 expressions (also called @dfn{sexps} in connection with moving across

lispref/processes.texi

@@ -2072,6 +2072,7 @@ If the vector does not include the port number, @var{p}, or if
 
 @node Byte Packing
 @section Packing and Unpacking Byte Arrays
+@cindex byte packing and unpacking
 
   This section describes how to pack and unpack arrays of bytes,
 usually for binary network protocols.  These functions convert byte arrays