#define CTRL_A 1
#define CTRL_B 2
#define CTRL_C 3
#define CTRL_D 4
#define CTRL_E 5
#define CTRL_F 6
#define CTRL_G 7
#define CTRL_H 8
#define CTRL_I 9
#define CTRL_J 10
#define CTRL_K 11
#define CTRL_L 12
#define CTRL_M 13
#define CTRL_N 14
#define CTRL_O 15
#define CTRL_P 16
#define CTRL_Q 17
#define CTRL_R 18
#define CTRL_S 19
#define CTRL_T 20
#define CTRL_U 21
#define CTRL_V 22
#define CTRL_W 23
#define CTRL_X 24
#define CTRL_Y 25
#define CTRL_Z 26
#define	ESC_CODE	27
#define	DEL_CODE	127

#define EXTRA_CODE	128
