167071152           0 of            1 not allocated
 ----------------------
 Buffer 167071152 in IDATAP
          1        order
          1        inc
 **********        blksize
          4        wordsize
  167070888        filler
  167072792        reader
         -1        index
          0        maxindex
          1        VM
          1        VMnreal
          0        VMoffset
  167071240        VMlist
     I         VMlist
     0    0
     I  reads   index    datap
     0    0        -1              0
 filler
      167070888 differences0
 readers
 sequence 167072792
 167071152         buffer
         0         indexf
         6         type
 167072600         reader
         0         indexr
         0         nextseq
         0         max
123