KEYSYM_FUNC
case KEYSYM_FUNC:
(KEYSYM_CLASS(keysym) == KEYSYM_FUNC) )
#define KEYSYM_FUNC_L(x) (KEYSYM_FUNC | ((x) - 1))
#define KEYSYM_FUNC_R(x) (KEYSYM_FUNC | ((x) - 1 + 0x10))
#define KEYSYM_FUNC_F(x) (KEYSYM_FUNC | ((x) - 1 + 0x20))
#define KEYSYM_FUNC_N(x) (KEYSYM_FUNC | ((x) - 1 + 0x30))