typedef struct {
   char[64] name;            // Effect shader
   int      brush;           // Brush that generated this effect
   int      unknown;         // Always 5, except in q3dm8, which has one effect with -1
} effect_t;

// Advertisements lump
typedef struct {
    // Single advertisements lump cell (a single advertisement data)
    int       cellId;          // The cellId key/value pair defined in Radiant
    vec3_t    normal;          // Normal vector to the advertisement plane
    vec3_t[4] rect;         // Advertisement plane boundaries
    char[64]  model;           // Advertisement display model
} advertisement_t;

typedef struct {
   float s, t;
} vec_t;

typedef struct {
   float x, y, z;
} vec3_t;