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<h1 class="Head">Find/Replace with Regular Expressions</h1>

<p>
The <strong>Find</strong> field allows regular expressions as defined by the <a href="http://java.sun.com/j2se/1.4.2/docs/api/java/util/regex/Pattern.html">Pattern class</a>.
<br>Additionally, it supports \R, which matches any form of line delimiter (Unix, Windows, Mac OS 9).
Note that \R does not work inside [].
</p>

<p>
The <strong>Replace</strong> field allows the following constructs:
</p>
  <table border="1" cellpadding="5" summary="supported constructs in the replace field">
    <tbody>
      <tr>
        <td>$i</td>
        <td>inserts
          <a href="http://java.sun.com/j2se/1.4.2/docs/api/java/util/regex/Pattern.html#cg">capturing group</a>
          i.
        </td>
      </tr>
      <tr>
        <td>\i</td>
        <td>inserts
          <a href="http://java.sun.com/j2se/1.4.2/docs/api/java/util/regex/Pattern.html#cg">capturing group</a>
          i (same as $i).
        </td>
      </tr>
      
      <tr> <td>\<i>x</i></td> <td>quotes character <i>x</i> (unless \<i>x</i> has a special meaning)</td> </tr>
      <tr> <td>\R</td> <td>inserts the default line delimiter of the document</td> </tr>
      <tr> <td>\x<i>hh</i></td> <td>inserts the hexadecimal character <i>hh</i></td> </tr>
      <tr> <td>\u<i>hhhh</i></td> <td>inserts the Unicode character <i>hhhh</i></td> </tr>
      <tr> <td>\n</td> <td>inserts a newline character (usually, you should use \R instead)</td> </tr>
      <tr> <td>\r</td> <td>inserts a carriage-return character (usually, you should use \R instead)</td> </tr>
      <tr> <td>\t</td> <td>inserts a tab character</td> </tr>
      <tr> <td>\f</td> <td>inserts a form-feed character</td> </tr>
      <tr> <td>\a</td> <td>inserts an alert (beep) character</td> </tr>
      <tr> <td>\e</td> <td>inserts an escape character</td> </tr>
      <tr> <td>\c<i>C</i></td> <td>inserts a the control character for <i>C</i></td> </tr>
      <tr> <td>\C</td> <td>retains the casing of the match (all lower case, all upper case, capitalized)</td> </tr>
      
    </tbody>
  </table>

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