Добавления элемента из include.
<?
$APPLICATION->IncludeFile(
SITE_DIR."include/2018-header-fix.php",
Array(),
Array("MODE"=>"html")
);
?>
<?$APPLICATION->IncludeComponent('bitrix:main.include','',array(
"AREA_FILE_SHOW" => "file",
"PATH" => SITE_DIR."include/logo.php",
));?>