Display the navigation chain in Bitrix NOT a component, just a page. as?

Question

1C-Bitrix

Tell me, on the site I created a section / 123 / inside it with pens, I made 4 pages.
1.php, 2.php, etc.
When I open for example 3.php, I want to see in the navigation section
*Section name 123* *page name 3.php*
Now wherever you go, it only indicates the section. How to live?

Answer 1

<?php
$APPLICATION->AddChainItem("Форум &quot;Отзывы&quot;", "/ru/forum/list.php?FID=3");
?>

CMain::AddChainItem()

Answer 2

https://dev.1c-bitrix.ru/api_help/main/reference/c...