定义撤消操作的策略。
一个使您可以将一系列的操作看作一个撤消操作的方法。
A method that enables you to treat a number of operations as one undo operation.
只有当所有受影响的数据生成计划都已关闭时，才能执行撤消操作。
You can perform the undo operation only if all affected data generation plans are closed.
执行两次撤消操作后文档将如下所示：(modification 1 original - document)。
Hitting undo twice would cause the document to look like this: (modification1 original-document).
补偿是对已经成功完成的工作执行“撤消”操作。
Compensation is an "undo" action for work that has already successfully completed.
如果你做了你不想做的操作，你可以撤消你的操作。
If you did something you did not want to do, you can undo your actions.
此操作为单向操作，无法撤消。
如何：撤消数据库重构操作。
无法撤消执行“更新”查询的操作。
删除报告为永久性操作，不能撤消。
撤消的撤消按钮的任何错误和使用home键重置视图。使用操作按钮的图像保存到您的图片库。
Undo any mistakes with the undo button and reset the view using the home button.
撤消的撤消按钮的任何错误和使用home键重置视图。使用操作按钮的图像保存到您的图片库。
Undo any mistakes with the undo button and reset the view using the home button.
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