Rather than forcing the user to understand the file system to achieve her goal, a simple Abandon Changes function on the main menu would suffice.
我们不能强迫用户理解文件系统，从而实现他们的目标，只要在主菜单上放一个简单的放弃修改功能就足够了。
FILE menu can also choose other menu items, they can achieve the function.
也可以选择FILE菜单 的其他菜单项，他们的功能均可实现。
FILE menu can also choose other menu items, they can achieve the function.
也可以选择FILE菜单 的其他菜单项，他们的功能均可实现。
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