WordPress/wp-admin/options-head.php

<?php

$wpvarstoreset = array('action','standalone', 'option_group_id');
for ($i=0; $i<count($wpvarstoreset); $i += 1) {
	$wpvar = $wpvarstoreset[$i];
	if (!isset($$wpvar)) {
		if (empty($_POST["$wpvar"])) {
			if (empty($_GET["$wpvar"])) {
				$$wpvar = '';
			} else {
				$$wpvar = $_GET["$wpvar"];
			}
		} else {
			$$wpvar = $_POST["$wpvar"];
		}
	}
}
?>

<br clear="all" />

<?php if (isset($_GET['updated'])) : ?>
<div id="message" class="updated fade"><p><strong><?php _e('Options saved.') ?></strong></p></div>
<?php endif; ?>