040000 tree ef59a60058294725d6700258dae183ba0819e42c	check
040000 tree dc7b08e75790ca381390b3a305147147d8df51b0	examples
040000 tree 273950396760e912e1f4c02da6bcf4173e67af86	fixedbugs
100644 blob efe13cf8bc56c170d2a232230521b79e995bdc1b	manual.go2