Syntax format of CLOCKxx

   OPERATOR  {PROMPT  }
             {NOPROMPT}

   TIMEZONE d.hh.mm.ss

   ACCURACY mmmmm

   ETRMODE  {YES}
            {NO }

   ETRDELTA  nn

   ETRZONE  {YES}
            {NO }

   SIMETRID nn

   STPMODE  {YES}
            {NO }

   TIMEDELTA  nn

   STPZONE  {YES}
            {NO }