I didn't notice this when playing Fate or the UBW route but noticed it when I started Heaven's Feel. When I play/read during the visual novel, I notice at the bottom there's a Flow Chart that I can view and there's also some sort of point counter to the right.
Now I'm not sure what this does at all, but does it have to do with the full save file I downloaded from the FAQ?
If not, can anyone explain what it does and it's translations? Not all of it it's translated. As well, during certain events or choices, a little message at the bottom notifies me of something happening. Did mirrormoon not translate this intentionally?