| 摘要 |
Systems and methods for saving data. A system automatically or manually saves data. The system saves two copies of the data. When a user reaches a point of achievement, the system saves a new copy of data over one of the previous copies. If the new copy of data is unsatisfactory, then the system maintains the other previous copy of the data. If the new copy of the data is satisfactory, then the system copies the new data over the previous data.
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