nestedpages-title-filter.php

add_filter('the_title', 'filterNestedPagesTitles', 10, 3);
function filterNestedPagesTitles($title, $post_id, $view = false)
{
	if ( !is_admin() ) return $title;
	$screen = get_current_screen();
	if ( $screen->base != 'toplevel_page_nestedpages' ) return $title;
	if ( !isset($view) || $view != 'nestedpages_title' ) return $title;
	// Code to configure custom title here
	$title = 'Custom Title'; 	
	return $title;
}