175576368           0 of            1 not allocated
 ----------------------
 Buffer 175576368 in IDATAP
          1        order
          1        inc
 **********        blksize
          4        wordsize
  175576088        filler
  175578016        reader
         -1        index
          0        maxindex
          1        VM
          1        VMnreal
          0        VMoffset
  175576472        VMlist
     I         VMlist
     0    0
     I  reads   index    datap
     0    0        -1              0
 filler
      175576088 differences0
 readers
 sequence 175578016
 175576368         buffer
         0         indexf
         6         type
 175577824         reader
         0         indexr
         0         nextseq
         0         max
123