<tdvalign="top">file for which the regular expression should be replaced.</td>
<tdalign="center">Yes if no nested <fileset> is used</td>
</tr>
<tr>
<tdvalign="top">match</td>
<tdvalign="top">The regular expression pattern to match in the file(s)</td>
<tdalign="center">Yes, if no nested <regularexpression> is used</td>
</tr>
<tr>
<tdvalign="top">replace</td>
<tdvalign="top">The substition pattern to place in the file(s) in place
of the regular expression.</td>
<tdalign="center">Yes, if no nested <substitution> is used</td>
</tr>
<tr>
<tdvalign="top">flags</td>
<tdvalign="top">The flags to use when matching the regular expression. For more
information, consult the Perl5 syntax<br/>
g --> Global replacement. Replace all occurances found<br/>
i --> Case Insensitive. Do not consider case in the match<br/>
m --> Multiline. Treat the string as multiple lines of input, using "^" and "$" as the start or end of any line, respectively, rather than start or end of string.<br/>
s --> Singleline. Treat the string as a single line of input, using "." to match any character, including a newline, which normally, it would not match.<br/>
<tdvalign="top"align="center">No</td>
</tr>
<tr>
<tdvalign="top">byline</td>
<tdvalign="top">Process the file(s) one line at a time, executing the replacement
on one line at a time (<i>true/false</i>). This is useful if you
want to only replace the first occurance of a regular expression on
each line, which is not easy to do when processing the file as a whole.
