OK, we can undo a closed tab.

If some site had opened a separate window (instead of a tab), and we
filled some data, submitted and closed that window, is there any method
that I can undo the close of that window again so that it opens and I
could see (and copy from) the data that I had earlier typed in to it??


And how to get Previous page, next tab buttons on such windows opened by
some scripts?
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V