<slide title="Testing Values">
  <example title="Check allowable range of numeric values"><![CDATA[<?php
if (($_GET['age'] < 13) || ($_GET['age'] > 65)) {...}
?>]]></example>
  <example title="Restrict %&amp;lt;select>% choices to a preset array"><![CDATA[<?php
$choices = array(1 => 'Trout', 'Halibut', 'Tilapia');
if (! $choices[$_POST['fish']]) { ... }
?>]]></example>
</slide>

