Quad Tree Node Array File id $00 12 File id Level id $04 17 Level id Not used $08 1020 Not used Packages $1C 4 Amount of packages that follow *Package $20 $1C 4 16 Unknown $00 3 Unknown High bit $03 1 High bit Unknown $04 3 Unknown High bit $07 1 High bit Unknown $08 3 Unknown High bit $0B 1 High bit Unknown $0C 3 Unknown High bit $0F 1 High bit