How to read diff result

digraph G {

 rankdir=LR;  // 设置布局方向为从左到右
 node [shape=record];
 node0 [label = "<f0> |<f1> |<f2> |<f3> |<f4> |<f5> |<f6> | "];

node1 [label = "{<n> n14 | 719 |

}"]; node2 [label = "{<n> a1 | 805 |

}"]; node3 [label = "{<n> i9 | 718 |

}"]; node4 [label = "{<n> e5 | 989 |

}"]; node5 [label = "{<n> t20 | 959 |

}"]; node6 [label = "{<n> o15 | 794 |

}"]; node7 [label = "{<n> s19 | 659 |

}"]; // 连线 node0:f0 -> node1:n; node0:f1 -> node2:n; node0:f2 -> node3:n; node0:f5 -> node4:n; node0:f6 -> node5:n; node2:p -> node6:n; node4:p -> node7:n; }