Hi Glenn, just to elaborate a bit - the Edit > Hide button actually has 3 functions on it.

Just a regular click on it will either hide the current selection or if nothing is selected unhide all hidden objects.

If you right-click on it, that will do an "Isolate selection", which is what you want to do - that hides all the unselected objects just keeping the selected objects to remain visible. Also the isolate selection retains a memory of the hide/show state of everything before the isolation and when you trigger it a second time (again with right-click on Edit > Hide), it will restore everything to its pre-isolate state.

Then the third function is "Show subset" - that's if you want to show only some of the currently hidden objects instead of showing them all. You trigger that one by Ctrl+click on the button. The view will switch to temporarily show all the hidden objects, you can then select the ones you are interested in and when you're done only those ones will get unhidden with the rest of the hidden ones going back to being hidden.

Hope this helps!

- Michael