要在集群中启用备份、归档和还原功能，可执行以下步骤。

To enable backup, archive, and restore functionality in a cluster, follow these steps.

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本程序具有悔棋，还原功能，可以记录走法，还可以进行布局。

The program has undo, restore function, you can record to walk, you can also layout.

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投票还原功能，可以将统计结果还原成各个投票者的投票情况。

Vote to restore the function of statistical results can be restored to all voters vote.

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