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I accidentally deleted my home screen pane. Instead of 4 panes, I now only have 3. I cannot find any info to add the 4th. Too bad there is no undo option or a popup confirming the change like on Windows OS.
long press a blank part of your screen, flick the cropped version of the pages left or right and you should see a blank page with a + sign on it.
Just touch the + sign and a new page will appear.