040000 tree 0d664c79fa418bc7accab5b90687ba1b72a88c00	check
040000 tree aeed56628d80f572613db0ffc91466944c026878	examples
040000 tree 8d70a7cf48baea1b1764859cee869c25690887fd	fixedbugs
100644 blob efe13cf8bc56c170d2a232230521b79e995bdc1b	manual.go2