This tool works adversely to the previous one as it displays only the selected parts. Let's try it out: select several structural elements, and in the right-click menu enable the respective tab.
Non-selected parts now are gone transparent and are not restored when
Redraw the view by enabling the respective tab of the right-click menu.
There is an additional effect of the "Show only selected" tool
Thus all the elements got hidden except for the selected ones.
