| 1 | 
 Oct Tree Interior Node Array | 
 
 
 
 
 
 | 2 | 
 File id $00     12      File id | 
 
 
 
 
 
 | 3 | 
 Level id        $04     17      Level id | 
 
 
 
 
 
 | 4 | 
 Not used        $08     1020    Not used | 
 
 
 
 
 
 | 5 | 
 Packages        $1C     4       Amount of packages that follow | 
 
 
 
 
 
 | 6 | 
 *Package                $20     $1C     4       36 | 
 
 
 
 
 
 | 7 | 
 Unknown $00     3       Unknown | 
 
 
 
 
 
 | 8 | 
 High bit        $03     1       High bit | 
 
 
 
 
 
 | 9 | 
 Unknown $04     3       Unknown | 
 
 
 
 
 
 | 10 | 
 High bit        $07     1       High bit | 
 
 
 
 
 
 | 11 | 
 Unknown $08     3       Unknown | 
 
 
 
 
 
 | 12 | 
 High bit        $0B     1       High bit | 
 
 
 
 
 
 | 13 | 
 Unknown $0C     3       Unknown | 
 
 
 
 
 
 | 14 | 
 High bit        $0F     1       High bit | 
 
 
 
 
 
 | 15 | 
 Unknown $10     3       Unknown | 
 
 
 
 
 
 | 16 | 
 High bit        $13     1       High bit | 
 
 
 
 
 
 | 17 | 
 Unknown $14     3       Unknown | 
 
 
 
 
 
 | 18 | 
 High bit        $17     1       High bit | 
 
 
 
 
 
 | 19 | 
 Unknown $18     3       Unknown | 
 
 
 
 
 
 | 20 | 
 High bit        $1B     1       High bit | 
 
 
 
 
 
 | 21 | 
 Unknown $1C     9       Unknown | 
 
 
 
 
 
 | 22 | 
 Unknown $20     4       Unknown; always the same (?) |