Copy the original element into an off-document node, modify the copy, and then replace the original element once you're done.
将原始元素拷贝到一个脱离文档的节点中,修改副本,然后覆盖原始元素。
Note: The off-document reference cannot synchronize text across documents.
注释:文档外引用无法同步跨文档的文本。
Note: The off-document reference cannot synchronize text across documents.
注释:文档外引用无法同步跨文档的文本。
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