设计基本原理总的在于保护那些登记在册的建筑，并在退出框架内，添加一个独特的当代层架构。

The design philosophy concentrates in respecting the listed buildings and in adding a unique contemporary layer of architecture inside the exiting framework.

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由于未调用任何函数，也未使用任何本地存储，所以您根本无需堆栈框架，并可通过链接寄存器退出。

Since you did not call any functions or use any local storage, you did not need a stack frame at all, so you can now just exit through the link register.

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要退出此活动，将鼠标放在框架的任何一角。

To exit the activity, place the mouse cursor in any corner of the frame.

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