This could come in handy if you are creating websites for clients and you want to add extra contextual help.

 //hook loading of new page and edit page screensadd_action('load-page-new.php','add_custom_help_page'); 
function add_custom_help_page() { 
//the contextual help filteradd_filter('contextual_help','custom_page_help'); 
function custom_page_help($help) { 
//keep the existing help copyecho $help; 
//add some new copyecho "<h5>Custom Features</h5>"; 
echo "<p>Content placed above the more divider will appear in column 1. Content placed below the divider will appear in column 2.</p>";