It is possible on the Internet.
I think this is a bad idea. That's why:
Pop-ups, the mechanism for new windows to appear, will potentially be blocked,
this is an unusual practice, so it will violate user expectations,
it may take time to work properly
An alternative would be to have virtual windows inside the web page, I mean to do something like this, except for using divs inside the page, which can be minimized and moved, but inside only the page
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