#define PEN		2
#define ERASER	3
#define CURSOR	4
#define TEXT	5
#define CLEAN	6
#define DISC	7
#define CONN	8
#define QUIT	9

struct PenRecord {
	unsigned char msgType;
	unsigned char size;
	short X;
	short Y;
};

struct TextRecord {
	unsigned char msgType;
	unsigned char size;
	short X;
	short Y;
	char buf[256];
};

struct EraserRecord {
	unsigned char msgType;
	unsigned char size;
	short X;
	short Y;
};

struct CursorRecord {
	unsigned char msgType;
	unsigned char filler;
	short X;
	short Y;
};

struct ConnRecord {
   unsigned char msgType;
   unsigned char size;
   char name[40];
};

struct CleanRecord {
   unsigned char msgType;
};

struct DiscRecord {
	unsigned char msgType;
};

struct QuitRecord {
	unsigned char msgType;
};

union Record {
   struct PenRecord     pr;
   struct TextRecord    tr;
   struct EraserRecord  er;
   struct CursorRecord  cr;
   struct CleanRecord   clr;
   struct DiscRecord    dr;
   struct ConnRecord    nr;
   struct QuitRecord    qr;
   };