static PrepareSql(&$arFields, $arOrder, &$arFilter, $arGroupBy, $arSelectFields, $obUserFieldsSql=false)
static CheckFields($ACTION, &$arFields, $ID=0)
static GetList($arOrder=Array("ID"=> "DESC"), $arFilter=Array(), $arGroupBy=false, $arNavStartParams=false, $arSelectFields=array())
static Update($ID, $arFields)