another patch by Peter. some WS.

docs/en/designers/language-modifiers/language-modifier-regex-replace.xml

@@ -38,7 +38,8 @@
   </informaltable>
   <para>
    A regular expression search and replace on a variable. Use the
-   syntax for preg_replace() from the PHP manual.
+   syntax for <ulink
+   url="&url.php-manual;preg_replace">preg_replace()</ulink> from the PHP manual.
   </para>
   <example>
    <title>regex_replace</title>
@@ -75,7 +76,12 @@ Infertility unlikely to be passed on, experts say.
 ]]>
    </screen>
   </example>
-</sect1>
+  <para>
+   See also <link linkend="language.modifier.replace">replace</link>
+   and <link linkend="language.modifier.escape">escape</link>.
+  </para>
+ </sect1>
+
 <!-- Keep this comment at the end of the file
 Local variables:
 mode: sgml
@@ -95,4 +101,4 @@ End:
 vim600: syn=xml fen fdm=syntax fdl=2 si
 vim: et tw=78 syn=sgml
 vi: ts=1 sw=1
--->
+-->