'Reset to default settings' .... Check the 'About' page in the menu.
Sorry to be unclear - that was why I asked. On my system it doesn't seem to do anything.
At least in Properties/Screen Saver/Preview mode (and presumably in real operation);
Press S, stats go away, press CTRL-R, stats are still gone.
Press F1, F2, F3, or F4, brightness changes. press CTRL-R, no change.
Change number/types/whatever of fish. Go to display, press CTRL-R, no change.
I tried several other changes, and couldn't get CTRL-R to "undo" anything.
So, what default settings does CTRL-R reset? Or is it something unique to my system (or to doing this test in preview mode)?
That's why I asked what it is supposed to do. And yes, I do know about the about page.