用户可以在这个页面上任意创建注释并编辑这些注释的内容（这个页面不会很复杂；我将把一些任务留给您，比如保存和移动内容以及重新调整内容的大小等）。
The page won't get too fancy; I'll leave saving the content, moving them around, resizing them and such to you.
好吧，事实上我还移动了摄像机，但这并不会过多的影响渲染。
Well, actually I moved the camera too, but that won't influence the rendering much either.
曾经我看到一部电影，里面的男主人公说，他想成为一课树，因为树是稳定的，永远不会移动。
Once I see from the movie that a man says he wants to be a tree, because a tree is stable and will never be flowed away.
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