s unless they are modified through use of a
      modifier marker. The strings

         .#
         .##
         .###
         .####

      are used to this end. When a numeric marker is followed
      immediately by one of these modifiers, the corresponding
      time component will be written with the number of decimal
      places indicated by number of successive occurrences of
      the character &quot;#&quot;. Any numeric token may be modified.

   Rounding vs. Truncation

      The meta markers ::TR