锁定文件后，其他人将无法修改其内容。适用于防止最终定稿的文档或正式文件被误改。
右键单击文件，选择编辑与版本 > 锁定编辑。要解除锁定时，在同一菜单中选择解除编辑锁定。
锁定文件的用户无需解除锁定即可修改文件。
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