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Could be used for a lot of cool things, like a mirror, a magnifying glass, keeping a part of the page in view even if it is outside of the screen (for editing purposes for instance), I'm sure I'm missing many other use cases. None of them fundamentally useful but cool in their own ways.

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The tricky bit here is that it's not going to do things like forward events, so using this to keep the page in view won't allow selecting text for example. For some things like the mimimap here, that seems like a feature? You want it to be purely visual in that case.

For other cases, I'm not sure if I should think of that as a feature or a limitation. Definitely something to play around with though.

Yes but you could make a change at the top of the page that would have an impact at the bottom, and that would be useful to see both changes at the same time.

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