/**
 * Values returned by get_keypress():
 *      - ASCII value for simple keys
 *      - 255 + second ASCII value for extended keys.
 */
#define KEY_ENTER           13
#define KEY_ESC             27
#define KEY_ARROW_UP        327
#define KEY_ARROW_LEFT      330
#define KEY_ARROW_RIGHT     332
#define KEY_ARROW_DOWN      335