extern clear();
extern locate();
extern cursize();
extern get_mode();
extern isrtstr();
extern isrtcnt();
extern putchat();
extern crtbuf();
extern scancrt();

#define UNDERSCORE 1
#define NORMAL 7
#define HILITE_UNDERSCORE 9
#define HILITE 10
#define REVERSE 112
#define BLINK_UNDERSCORE 129
#define BLINK_HILITE_UNDERSCORE 137
#define HILITE_BLINK 138
#define BLINKING 237
#define BLINK_REVERSE_VIDEO 240