Find the window that vanished

Bring back a window that seems to have disappeared.

Windows stack like sheets of paper. A window that has vanished is nearly always behind the one in front.

It has not closed. Nothing closes a window except closing it.

Key points

What to remember

Try this

Open two things on your own computer, then press each in turn in the bottom bar.

Practice: Find the window that vanished. Your first lesson is free, with no account or card; the rest are part of a Lantern plan. Interactive lessons require JavaScript.

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