Form Validation: return calues for rules?

[eluser]misplacedme[/eluser]
Check out the section labeled "Showing Errors Individually" in the form validation page.

Code:

<h5>Username</h5>
&lt;?php echo form_error('username'); ?&gt;
&lt;input type="text" name="username" value="&lt;?php echo set_value('username'); ?&gt;" size="50" /&gt;