+
+instance Semigroup (ByteCode a p) where
+ mappend m n = BC \s->let (b1, (b2, t)) = runBC m <$> runBC m s in (b1 ++ b2, t)
+
+instance Monoid (ByteCode a p) where
+ mempty = retrn []
+
+(<++>) infixl 2 :: (ByteCode a p) (ByteCode b q) -> ByteCode c r
+(<++>) m n = BC \s->let (b1, (b2, t)) = runBC n <$> runBC m s in (b1 ++ b2, t)
+
+(<+->) infixr 1
+(<+->) m n :== m <++> retrn n
+
+runBC (BC m) = m
+
+retrn :: ([BC] -> ByteCode a p)
+retrn = BC o tuple
+fmp :: ([BC] -> [BC]) (ByteCode a p) -> ByteCode a p
+fmp f b = BC \s->let (bc, s`) = runBC b s in (f bc, s`)
+
+instance toByteCode Bool where
+ toByteCode True = [toChar 1]
+ toByteCode False = [toChar 0]
+instance toByteCode Int where toByteCode n = map toChar [n/256,n rem 256]
+instance toByteCode Long where toByteCode (L n) = toByteCode n
+instance toByteCode Char where toByteCode c = [c]
+instance toByteCode String where toByteCode s = undef
+instance toByteCode Button where toByteCode s = [toChar $ consIndex{|*|} s]