typedef struct ViewPort ViewPort;

typedef struct Town Town;

typedef struct NewsItem NewsItem;

typedef struct Industry Industry;

typedef struct DrawPixelInfo DrawPixelInfo;

typedef uint16 VehicleID;

typedef byte PlayerID;

typedef byte OrderID;

typedef byte CargoID;

typedef uint16 StringID;

typedef uint32 SpriteID;    ///< The number of a sprite, without mapping bits and colortables

typedef uint32 PalSpriteID; ///< The number of a sprite plus all the mapping bits and colortables