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+====== Alt-key shortcuts do not work ======
+**Problem:**
+The Alt keyboard shortcut to manipulate ROIs does not work.
+This is because the GUI uses the same shortcut for an alternative function (for example move a window around the desktop.
+**Solution:**
+In KDE you can change the behaviour of the Modifier Key (to alternatively listen to the Meta
+key).
+Setting //**System Settings>Window Behaviour>Modifier key**// to "Meta" (default is "Alt") resolves this problem. Note that now the Meta-key (also called Win-key in some keyboards) executes the command of KDE.
+If there is a similar setting in Gnome, please add it here.