It would help if the "show only" tool had the option to remember its previous state, an example would be:

1. in a model I select 20 items and then select "show only". 20 items are visible.

2. I perform some operations and then select 5 of the visible items and again select "show only". 5 items are visible. I perform sone operations.

3. I now want to go back to see the original 20 items I selected. My only current way to achieve this is to either "show all" and re-select the 20 items or select "show" and re-select the 15 hidden items (both are less than elegant solutions).

4. what I propose is to option click on the "show only" tool and it would revert back to the last state. In the example above when 5 objects are visible, the first option click would revert back to the original 20 items selected, the next option click would revert to full visibility of the model.

Gary