@section Syntax of Regular Expressions
@cindex syntax of regexps
+ This manual describes regular expression features that users
+typically want to use. There are additional features that are
+mainly used in Lisp programs; see @ref{Regular Expressions,,,
+elisp, the same manual}.
+
Regular expressions have a syntax in which a few characters are
special constructs and the rest are @dfn{ordinary}. An ordinary
character is a simple regular expression which matches that same