TPost

        // X can be obtained from:      x = LEVEL_POST_TO_WORLD( levelRow, LOD );
        // Y can be obtained from:      y = LEVEL_POST_TO_WORLD( levelCol, LOD );
        float           z;              // Units of floating point feet -- positive z axis points DOWN

        // Color information
        int                     colorIndex;     // (could shrink to a byte)

        // Texture information
        float           u;              // u is East/West
        float           v;              // v is North/South
        float           d;
        TextureID       texID;  // 16 bit value (see TerrTex.h)

        // normal information
        float           theta;
        float           phi;