Устройство стандартного шаблона

<?
if(!defined("B_PROLOG_INCLUDED") || B_PROLOG_INCLUDED!==true)die();

global $APPLICATION;

if (!function_exists("GetTreeRecursive")) //Include from main.map component
{
$aMenuLinksExt=$APPLICATION->IncludeComponent("bitrix:eshop.menu.sections", "", array(
   "IBLOCK_TYPE_ID" => "catalog",
   "CACHE_TYPE" => "A",
   "CACHE_TIME" => "36000000"
   ),
   false,
   Array('HIDE_ICONS' => 'Y')
);
$aMenuLinks = array_merge($aMenuLinks, $aMenuLinksExt);
}
?>