CListField::IsMultiple

public function IsMultiple();
abstract public function GetDefaultValue();
abstract public function SetSort($sort);
abstract public function GetArray();

public function Delete()
{
	global $DB;
	$DB->Query("
		DELETE FROM b_lists_field
		WHERE IBLOCK_ID = ".$this->_iblock_id."
		AND FIELD_ID = '".$DB->ForSQL($this->_field_id)."'
	", false, "File: ".__FILE__."
Line: ".__LINE__);
}