I did read that section. It's helpful, but less than definitive. I have a section of code that isn't behaving as I think it should. This excerpt is supposed to list a page's parent (if one exists), the page itself, and any children of the page:
$thispage = $wp_query->post;
echo "this page's parent ID is " . $thispage->post_parent . $newline;
echo "this page's ID is " . $thispage->ID . $newline;
But it's not working right. I thought if could see the internals of the post data structure, I could de-bug this a little easier. Any other suggestions?