Something

function markbook_menu($may_cache) {	$items = array();	if($may_cache) {		$items[]=array(	'path'		=>	'markbook',						'title'		=>	t('Markbook'),						'callback'	=>	'markbook_page',						'access'	=>	user_access('access markbook'),						'type'		=>	MENU_CALLBACK);		//Take command of all /markbook URLs	} else {		$items[]=array(	'path'		=>	'markbook',						'title'		=>	t('my markbook'),						'access'	=>	user_access('edit own markbook'),						'type'		=> MENU_DYNAMIC_ITEM);		//display "my markbook" item	}	return $items;}