It is a convenience to be able to bring up just 1 book with nothing else, as I think was the default in earlier Acc versions.
The convenience is that you can use the slider to zoom ahead in the book without ending up in Revelation. It seems to me that you used to be able to bring up an entire book (aside from Psalms) by entering like Jonah 1-100 or Genesis 1-100, though the book doesn't have 100 chapters. But now that method brings up a rebuke pop-up ("the entry 100 cannot be found"); so I have to know how many chapters the book has or luck out some way. For example, Micah has 7 chapters. Notwithstanding, Micah 1-8 and Micah 1-9 will bring up the entire book, but Micah 1-10 and Micah 1-100 do not work.
So is there a fool proof way to bring on screen just one book when you don't know how many chapters it has?