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Werner's right, the gui approach, Post #2, doesn't do the job in 6.7.1.

@ Karibu
You are clicking the Desktop.
Click the TaskBar, at the bottom of the screen in my case.
Top of the screen for Werner, last I heard.

Try this:
Right-click TaskBar, then click TaskBar (Window List) Setting
Select Bindings Tab, Right Button, Show Menu.
;D