udatum mk_sdu ();
void free_sdu ();
int equal_sdu ();
char* draw_sdu ();

extern int sdu_sort;

#define line_CR 1
#define line_CC 2
#define line_DR 3
#define line_DC 4
#define line_AK 5
#define line_DT 6

#define line_B0 0
#define line_B1 1
#define line_NONE 9

void setblock ();
int cready();
int cget ();

int key_press ();
kdatum user_input ();
void send_asp ();
void clean_kb ();

extern int T;
extern int Tinc;
extern int Treset;

udatum sdu1 ();

int any_message ();
kdatum medium_input ();
void send_cmsp ();
void clean_sockets ();

void    connect_one ();
void    connect_two ();

int  int_val ();
void draw_menu ();
kdatum accepted ();

