Hardware fallback and compatibility levels in original order.
Primary format code.
Top-level pixel height.
Primary levels, ending at the engine's 4-pixel cutoff.
Whether the engine's partial mip chain is present (0 or 1).
Original name bytes as hex.
Unexplained suffix as hex, never discarded by a DXT writer.
NTF signature version byte.
Top-level pixel width.
Editable NTF container stored in a DXT file or embedded in world textures.