WordPress at a glance
filter is not described

wp_list_pages_excludes filter-hook . WP 2.1.0

Filters the array of pages to exclude from the pages list.

Usage

add_filter( 'wp_list_pages_excludes', 'filter_function_name_1487' );
function filter_function_name_1487( $exclude_array ){
	// filter...

	return $exclude_array;
}
$exclude_array(array)
An array of page IDs to exclude.

Where the hook is called

wp_list_pages()
wp-includes/post-template.php 1225
$r['exclude'] = implode( ',', apply_filters( 'wp_list_pages_excludes', $exclude_array ) );

Where the hook is used (in WP core)

Does not used.