"FOREWORD This amendment has been prepared by IEC technical committee 1:Terminology. The committee has decided that the contents of this amendment and the base publication will remain unchanged until the maintenance result date indicated on the IEC web site under ""http://webstore.iec.ch"" in the data related to the specific publication. At this date@ the publication will be ?reconfirmed@ ?withdrawn@ ?replaced by a revised edition@ or ?amended."