Interactive Atlas Mirror and Flip

[aggregory]

I am confused about the Mirror and Flip toggle buttons on the Interactive Atlas. I can turn them on or off and the atlas view mirrors or flips as expected. But which is on and which is off. I think that the darkened buttons as shown in this image means mirror and flip are off. At least when they are dark, the image matches the view in my planisphere. But my intuition tells me that dark should be mean on rather than off, but then the view is wrong. I checked the user instructions but did not see any mention about the button status indicator. I'm not saying it isn't there, I just didn't see anything. Anyway, the view in the image seems correct, but do I have mirror and flip turned on or turned off? I hope they are off, because if they are on, then there is more I don't understand.

Thanks,
Antone