Improve indexing.

doc/lispref/ChangeLog

 2013-10-24  Xue Fuqiao  <xfq.free@gmail.com>
 
 	* display.texi (Face Remapping): Add indexes for face remapping.
-	(Font Selection): Add indexes for font selection.
+	(Font Selection): Add indexes.
 	(Low-Level Font): Add an index for font registry.
 
 2013-10-23  Glenn Morris  <rgm@gnu.org>

doc/lispref/display.texi

@@ -2936,6 +2936,7 @@ other registries given in @var{alternate-registries}, one by one,
 until it finds a registry that does exist.
 @end defopt
 
+@cindex scalable fonts
   Emacs can make use of scalable fonts, but by default it does not use
 them.