/crt/include/console.h
#ifndef __CONSOLE_H
#define __CONSOLE_H

// constants for command keys returned from readkey()
#define KEY_UP        -1024
#define KEY_DOWN      -1025
#define KEY_LEFT      -1026
#define KEY_RIGHT     -1027
#define KEY_ENTER     -1028
#define KEY_BACKSPACE -1029
#define KEY_TAB       -1030
#define KEY_BREAK     -1031

#define is_command_key(k) (k <= -1024 && k > -2048)

#endif //__CONSOLE_H