thanks for the pointer(s)...still no go concerning ExtraView (neither bottom, nor left), whichever way I try to get there (including the one suggested by you).
All I get is this, see pic., i.e. the ExtraView area opens but nothing can be opened in/tranferred to it (including no tabs, no command buttons etc). Any old way I try to get things "to the ExtraView", all navigation happens within the DefaultView area, worse even: if I try to use a Keyboard shortcut to "move active tab to extraview", the tab (correctly) disappears from default view but never "arrives" in Extraview, ie it effectifely closes.
Any ideas? Any special settings necessary?