Как скачать файл из инфоблока?

<?foreach($arResult["DISPLAY_PROPERTIES"] as $pid=>$arProperty):?>
...
<?endforeach?>

<?foreach($arResult["DISPLAY_PROPERTIES"] as $pid=>$arProperty):?>
   <?=$arProperty["NAME"]?>:<b>
   <?if($pid == "КОД_СВОЙСТВА_ФАЙЛ"):
      echo '<a href="'.$arProperty["DISPLAY_VALUE"].'">Скачать</a>';
   elseif(is_array($arProperty["DISPLAY_VALUE"])):
      echo implode(" / ", $arProperty["DISPLAY_VALUE"]);
   else:
      echo $arProperty["DISPLAY_VALUE"];
   endif?>
   </b><br />
<?endforeach?>

   
        $arResult["DISPLAY_PROPERTIES"] = array();
            foreach($arParams["PROPERTY_CODE"] as $pid)
            {
                $prop = &$arResult["PROPERTIES"][$pid];
                if((is_array($prop["VALUE"]) && count($prop["VALUE"])>0) ||
                (!is_array($prop["VALUE"]) && strlen($prop["VALUE"])>0))
                {
                    $arResult["DISPLAY_PROPERTIES"][$pid] = CIBlockFormatProperties::GetDisplayValue($arResult, $prop, "catalog_out");
                }
            }

<?foreach($arResult["DISPLAY_PROPERTIES"] as $pid=>$arProperty):?>
   <?=$arProperty["NAME"]?>:<b>
   <?if($pid == "INSTRUCTIONS"):
echo '<a href="'.$arProperty["DISPLAY_VALUE"].'">'.$arProperty["DESCRIPTION"].'</a>';
   elseif($pid == "FILES"):
     echo '<a href="'.$arProperty["DISPLAY_VALUE"].'">Скачать</a>';
   elseif(is_array($arProperty["DISPLAY_VALUE"])):
      echo implode(" / ", $arProperty["DISPLAY_VALUE"]);
   else:
      echo $arProperty["DISPLAY_VALUE"];
   endif?>
   </b><br />