# The 60 RATC children with no `opt ` block — probe output

```
$ cargo run -p sylpheed-formats --example ratc_optless_children -- $SYLPHEED_DISC/dat/*.pak

RATC children scanned          : 18002
  with NO accepted `opt ` block: 60
  ... of which are child #0    : 0

why, by cause:
   TagBeyondWindow      x60

every occurrence (name is what the FALLBACK scan returned):
   GP_READY_ROOM.pak            entry   26 child   1                           TagBeyondWindow(213)
      24 bytes before the magic: 00 00 00 07 00 00 00 28 00 00 00 08 00 00 00 28 00 00 00 09 00 00 00 28
   GP_READY_ROOM.pak            entry   26 child   2                           TagBeyondWindow(60813)
      24 bytes before the magic: 0a eb 61 00 08 eb 61 00 06 eb 61 00 05 eb 61 00 03 eb 61 00 01 eb 61 00
   ... (the remaining 54 rows are the same five bundles' children 1..10;
        every distance is 213 + n*60600, i.e. the SAME tag)
```

## Reading bundle 26 directly — the ten are frames of one `.tan`

```
entry 26: 15 children, payload 706609 bytes
    0 @0x00000444 T8aD  size     1933  opt@-40       name='pbf15_energie_generator2.t32'
    1 @0x00000bd1 T8aD  size    60600  opt@-213      name='pb_f15_eg_anm.tan'
    2 @0x0000f889 T8aD  size    60600  opt@-60813    name='pb_f15_eg_anm.tan'
    3 @0x0001e541 T8aD  size    60600  opt@-121413   name='pb_f15_eg_anm.tan'
    4 @0x0002d1f9 T8aD  size    60600  opt@-182013   name='pb_f15_eg_anm.tan'
    5 @0x0003beb1 T8aD  size    60600  opt@-242613   name='pb_f15_eg_anm.tan'
    6 @0x0004ab69 T8aD  size    60600  opt@-303213   name='pb_f15_eg_anm.tan'
    7 @0x00059821 T8aD  size    60600  opt@-363813   name='pb_f15_eg_anm.tan'
    8 @0x000684d9 T8aD  size    60600  opt@-424413   name='pb_f15_eg_anm.tan'
    9 @0x00077191 T8aD  size    60600  opt@-485013   name='pb_f15_eg_anm.tan'
   10 @0x00085e49 T8aD  size    60632  opt@-545613   name='pb_f15_eg_anm.tan'
   11 @0x00094b21 T8aD  size    17523  opt@-32       name='pbf15_pd_inside2.t32'
   12 @0x00098f94 T8aD  size    75068  opt@-35       name='pbenergie_generator.t32'
   13 @0x000ab4d0 T8aD  size     4697  opt@-28       name='pbf15_eg_eff.t32'
   14 @0x000ac729 RATC  size      264  opt@-25       name='pb_s15_eg.rat'
```

## Disc-wide: every `opt ` name, by extension

```
`opt ` blocks disc-wide: 18718

by extension:
   .t32       x14756
   .rat       x3311
   .prm       x367
   .tbm       x224
   .sbo       x54
   .tan       x6

.tan resources with >=1 child: 6
   GP_READY_ROOM.pak        pb_f15_eg_anm.tan              frames= 10 sizes=[60600, 60632]  x6 bundles
```