您不应该允许删除任意的工件，除非真的有必要这样做。

You should not allow deleting any artifact unless it is really necessary to do so.

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用户可以选择任意数量的记录并在一个操作中全部删除。

A user can select any number of records and delete an operation.

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以XML树型结构支持命名空间的操作，任意元素上都可以增加、修改或删除命名空间的声明，还可以从JDOM结构中移除声明。

Namespace manipulation is now supported in the XML tree, including the ability to add, modify, or delete namespace declarations on any element or remove the declaration from the JDOM structure.

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