Display parent headline and a list of children links in a submenu.

In this illustrative example:

• Services is the parent
• Service 1, Service 2, and Service 3 is children

The headline in the left column is Services both on parent as well as children page.

And this is the code:

<h2><?php

$parent_title = get_the_title($post->post_parent);

echo $parent_title;

?></h2>

<?php

if($post->post_parent)

$children = wp_list_pages(“title_li=&child_of=”.$post->post_parent.”&echo=0″);

else

$children = wp_list_pages(“title_li=&child_of=”.$post->ID.”&echo=0″);

if ($children) { ?>

<ul>

<?php echo $children; ?>

</ul>

<?php } ?>