C#|*D*|D|...|#D#|
      -------------------------------------------------------------
       bos bos bos             eos           eos eos bos       eos

   In this example, there are two chained physical bitstreams, the first
   of which is a grouped stream of three logical bitstreams A, B, and C.
   The second physical bitstream is chained after the end of the grouped
   bitstream, which ends after the last eos page of all its grouped
   logical bitstreams.  As can be seen, grouped bitstreams begin



Pfeiffer                     Informational                      [Page 5]
