* Menu:
+* $ in regexp: Regexps.
+* ( in regexp: Regexps.
+* ) in regexp: Regexps.
+* * in regexp: Regexps.
+* *? in regexp: Regexps.
+* + in regexp: Regexps.
+* +? in regexp: Regexps.
+* . in regexp: Regexps.
* .mailrc file: Mail Headers.
* // in file name: Minibuffer File.
+* ? in regexp: Regexps.
+* ?? in regexp: Regexps.
+* [ in regexp: Regexps.
+* \ in regexp: Regexps.
+* \' in regexp: Regexps.
+* \(?: in regexp: Regexps.
+* \< in regexp: Regexps.
+* \= in regexp: Regexps.
+* \> in regexp: Regexps.
+* \` in regexp: Regexps.
+* \B in regexp: Regexps.
+* \b in regexp: Regexps.
+* \S in regexp: Regexps.
+* \s in regexp: Regexps.
+* \W in regexp: Regexps.
+* \w in regexp: Regexps.
+* \{n,m\} in regexp: Regexps.
+* ] in regexp: Regexps.
+* ^ in regexp: Regexps.
* Abbrev mode: Minor Modes.
* abbrevs: Abbrevs.
* aborting: Quitting.
* autoload: Loading.
* backup file: Backup.
* batch mode: Command Switches.
+* beginning of line in regexp: Regexps.
* bell, changing: Audible Bell.
* binary packages: Package Terminology.
* binding: Commands.
* changing buffers: Select Buffer.
* changing menu items: Menu Customization.
* character set: Intro to Keystrokes.
+* character set (in regexp): Regexps.
* checking in files: Concepts of VC.
* checking out files: Concepts of VC.
* Chinese: Mule.
* recursive editing level: Recursive Edit.
* redefining keys: Key Bindings Using Strings.
* regexp: Regexp Search.
+* regexp alternative: Regexps.
+* regexp grouping: Regexps.
* region <1>: Case.
* region: Mark.
* registered file: Concepts of VC.
* yahrzeits <1>: Sexp Diary Entries.
* yahrzeits: From Other Calendar.
* yanking: Yanking.
+* | in regexp: Regexps.