SetTime procedure

  DECLARATION:  SetTime(Hour, Minute, Second, Sec100 : Word);

      PURPOSE:  Sets the current operating system time

         UNIT:  DOS

      REMARKS:  If SetTime is called with an invalid time, the call is
                ignored and the system clock is left as it was.  Valid
                ranges for the four parameters are as follows:

                                Hour   = 0..23
                                Minute = 0..59
                                Second = 0..59
                                Sec100 = 0..99