CAllIBlockElement::__InitFile

function __InitFile($old_id, &$arFields, $fname)
{
	if($old_id>0
		&&
		(
			!is_set($arFields, $fname)
			||
			(
				$arFields[$fname]['name'] == ''
				&&
				$arFields[$fname]['del']!="Y"
			)
		)
		&&
		($p = CFile::MakeFileArray($old_id))
	)
	{
		if(is_set($arFields[$fname], 'description'))
			$p['description'] = $arFields[$fname]['description'];
		$p["OLD_VALUE"] = true;
		$arFields[$fname] = $p;
	}
}