175448488           0 of            1 not allocated
 ----------------------
 Buffer 175448488 in IDATAP
          1        order
          1        inc
  751740601        blksize
          4        wordsize
  175448888        filler
  175448712        reader
         -1        index
          0        maxindex
          1        VM
          1        VMnreal
          0        VMoffset
  175448576        VMlist
     I         VMlist
     0    0
     I  reads   index    datap
     0    0        -1              0
 filler
      175448888 readtiff0
 readers
 sequence 175448712
 175448488         buffer
         0         indexf
         1         type
 175451104         reader
         0         indexr
         0         nextseq
123